{"id":142,"date":"2024-05-29T10:52:44","date_gmt":"2024-05-29T07:52:44","guid":{"rendered":"https:\/\/sisu.ut.ee\/signaalitootlus1\/?page_id=142"},"modified":"2024-05-29T10:52:44","modified_gmt":"2024-05-29T07:52:44","slug":"kontrollkusimused-3-osa-kohta","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/signaalitootlus1\/kontrollkusimused-3-osa-kohta\/","title":{"rendered":"Kontrollk\u00fcsimused 3. osa kohta"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam2\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-2\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"  watupro-required-12 watupro-question-id-12\">\n\t\t\t<div class=\"question-content\"><div><p>A discrete time signal is shown on the figure below. What is the formula of the signal?<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"404\" height=\"267\" class=\"alignnone wp-image-47\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_10.png\" title=\"3_10.png\" alt=\"3_10.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_10.png 404w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_10-300x198.png 300w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"12\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType12\" class=\"answerTypeCnt1\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-12\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices12\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-43\" class=\"answer   answerof-12 \" value=\"43\"><label for=\"answer-id-43\" id=\"answer-label-43\" class=\" answer\"><span><p>u[2-n]-u[n-4]<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-42\" class=\"answer   answerof-12 \" value=\"42\"><label for=\"answer-id-42\" id=\"answer-label-42\" class=\" answer\"><span><p>u[4]-u[2]<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-45\" class=\"answer   answerof-12 \" value=\"45\"><label for=\"answer-id-45\" id=\"answer-label-45\" class=\" answer\"><span><p>u[n+2]-u[n-4]<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-12[]\" id=\"answer-id-44\" class=\"answer   answerof-12 \" value=\"44\"><label for=\"answer-id-44\" id=\"answer-label-44\" class=\" answer\"><span><p>u[n-2]-u[n+4]<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"  watupro-required-7 watupro-question-id-7\">\n\t\t\t<div class=\"question-content\"><p>Consider these signals:<\/p><p style=\"text-align: left;\"><strong>1.<\/strong><\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"411\" height=\"257\" class=\"alignnone wp-image-28\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_a.png\" title=\"3_6_a.png\" alt=\"3_6_a.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_a.png 411w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_a-300x188.png 300w\" sizes=\"auto, (max-width: 411px) 100vw, 411px\"><\/p><p><strong>--------------------------------------------------------<\/strong><\/p><p><strong>2.<\/strong><\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"516\" height=\"277\" class=\"alignnone wp-image-29\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_d.png\" title=\"3_6_d.png\" alt=\"3_6_d.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_d.png 516w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_d-300x161.png 300w\" sizes=\"auto, (max-width: 516px) 100vw, 516px\"><\/p><p><strong><strong>--------------------------------------------------------<\/strong><\/strong><\/p><p><strong>3.<\/strong><\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"497\" height=\"284\" class=\"alignnone wp-image-30\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_b.png\" title=\"3_6_b.png\" alt=\"3_6_b.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_b.png 497w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_b-300x171.png 300w\" sizes=\"auto, (max-width: 497px) 100vw, 497px\"><\/p><p><strong><strong>--------------------------------------------------------<\/strong><\/strong><\/p><p><strong>4.<\/strong><\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"531\" height=\"277\" class=\"alignnone wp-image-31\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_e.png\" title=\"3_6_e.png\" alt=\"3_6_e.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_e.png 531w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_e-300x156.png 300w\" sizes=\"auto, (max-width: 531px) 100vw, 531px\"><\/p><p><strong>--------------------------------------------------------<\/strong><\/p><p><strong>5.<\/strong><\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"524\" height=\"278\" class=\"alignnone wp-image-32\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_c.png\" title=\"3_6_c.png\" alt=\"3_6_c.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_c.png 524w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_6_c-300x159.png 300w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\"><\/p><p>Match the equations with the corresponding signals!<\/p><div class=\"question-choices\"><table class=\"question-choices watupro-matrix-droppable\" id=\"watuPROMatrixDroppable_7\"><tr><td class=\"watupro-matrix-left-cell\">Signal #1<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable7\" id=\"watuPRODroppableCell18\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-0-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell18', 0);return false;\">u[n+2]<!--WTPMD5d11788a762167ac531fbd1e89937c730--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell18', 1);return false;\">e^wt<!--WTPMD5118b3908241f54ec45ce3024a567a410--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell18', 2);return false;\">cos(t)<!--WTPMD55908f6095d26b63cee6172bf2734b9f7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell18', 3);return false;\">e^jwt<!--WTPMD51ca063f72c3c518c0e029845935a89c5--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-0-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell18', 4);return false;\">delta[n-3]<!--WTPMD5e7d7afbdfc2dcd1ce7cca07ed348ae38--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-7 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell18\" name=\"matrix-left-18\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Signal #2<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable7\" id=\"watuPRODroppableCell19\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-1-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell19', 0);return false;\">u[n+2]<!--WTPMD5d11788a762167ac531fbd1e89937c730--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell19', 1);return false;\">e^wt<!--WTPMD5118b3908241f54ec45ce3024a567a410--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell19', 2);return false;\">cos(t)<!--WTPMD55908f6095d26b63cee6172bf2734b9f7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell19', 3);return false;\">e^jwt<!--WTPMD51ca063f72c3c518c0e029845935a89c5--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-1-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell19', 4);return false;\">delta[n-3]<!--WTPMD5e7d7afbdfc2dcd1ce7cca07ed348ae38--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-7 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell19\" name=\"matrix-left-19\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Signal #3<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable7\" id=\"watuPRODroppableCell20\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-2-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell20', 0);return false;\">u[n+2]<!--WTPMD5d11788a762167ac531fbd1e89937c730--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell20', 1);return false;\">e^wt<!--WTPMD5118b3908241f54ec45ce3024a567a410--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell20', 2);return false;\">cos(t)<!--WTPMD55908f6095d26b63cee6172bf2734b9f7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell20', 3);return false;\">e^jwt<!--WTPMD51ca063f72c3c518c0e029845935a89c5--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-2-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell20', 4);return false;\">delta[n-3]<!--WTPMD5e7d7afbdfc2dcd1ce7cca07ed348ae38--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-7 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell20\" name=\"matrix-left-20\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Signal #4<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable7\" id=\"watuPRODroppableCell21\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-3-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell21', 0);return false;\">u[n+2]<!--WTPMD5d11788a762167ac531fbd1e89937c730--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell21', 1);return false;\">e^wt<!--WTPMD5118b3908241f54ec45ce3024a567a410--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell21', 2);return false;\">cos(t)<!--WTPMD55908f6095d26b63cee6172bf2734b9f7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell21', 3);return false;\">e^jwt<!--WTPMD51ca063f72c3c518c0e029845935a89c5--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-3-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell21', 4);return false;\">delta[n-3]<!--WTPMD5e7d7afbdfc2dcd1ce7cca07ed348ae38--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-7 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell21\" name=\"matrix-left-21\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">Signal #5<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable7\" id=\"watuPRODroppableCell22\"><div class=\"question-choices\"><div class=\"watupro-matrix-right\"><div id=\"watuproNMatrixSelection-4-0\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-0\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell22', 0);return false;\">u[n+2]<!--WTPMD5d11788a762167ac531fbd1e89937c730--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-1\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-1\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell22', 1);return false;\">e^wt<!--WTPMD5118b3908241f54ec45ce3024a567a410--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-2\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-2\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell22', 2);return false;\">cos(t)<!--WTPMD55908f6095d26b63cee6172bf2734b9f7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-3\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-3\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell22', 3);return false;\">e^jwt<!--WTPMD51ca063f72c3c518c0e029845935a89c5--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><div id=\"watuproNMatrixSelection-4-4\" class=\" watupro-matrix-draggable watupro-nmatrix-answer-4\" onclick=\"WatuPROINMatrix.sel(this, 'watuPRODroppableCell22', 4);return false;\">delta[n-3]<!--WTPMD5e7d7afbdfc2dcd1ce7cca07ed348ae38--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-7 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell22\" name=\"matrix-left-22\" value=\"\"><\/td><\/tr><\/table><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"7\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType7\" class=\"answerTypeCnt2\" value=\"nmatrix\"><input type=\"hidden\" id=\"watupro-required-question-7\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"  watupro-required-6 watupro-question-id-6\">\n\t\t\t<div class=\"question-content\"><div><p>Is the sum of two periodic signals also always periodic?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"6\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType6\" class=\"answerTypeCnt3\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-6\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices6\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-6[]\" id=\"answer-id-16\" class=\"answer   answerof-6 \" value=\"16\"><label for=\"answer-id-16\" id=\"answer-label-16\" class=\" answer\"><span><p>True<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-6[]\" id=\"answer-id-17\" class=\"answer   answerof-6 \" value=\"17\"><label for=\"answer-id-17\" id=\"answer-label-17\" class=\" answer\"><span><p>False<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"  watupro-required-10 watupro-question-id-10\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following signals are periodic?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"10\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType10\" class=\"answerTypeCnt4\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-10\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices10\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-36\" class=\"answer   answerof-10 \" value=\"36\"><label for=\"answer-id-36\" id=\"answer-label-36\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"18\" class=\"alignnone wp-image-45\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/t2.png\" title=\"t2.png\" alt=\"t2.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-29\" class=\"answer   answerof-10 \" value=\"29\"><label for=\"answer-id-29\" id=\"answer-label-29\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"22\" class=\"alignnone wp-image-38\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/coswt.png\" title=\"coswt.png\" alt=\"coswt.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-32\" class=\"answer   answerof-10 \" value=\"32\"><label for=\"answer-id-32\" id=\"answer-label-32\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"17\" class=\"alignnone wp-image-41\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/ewt.png\" title=\"ewt.png\" alt=\"ewt.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-35\" class=\"answer   answerof-10 \" value=\"35\"><label for=\"answer-id-35\" id=\"answer-label-35\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"22\" class=\"alignnone wp-image-44\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/coswtw.png\" title=\"coswtw.png\" alt=\"coswtw.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-34\" class=\"answer   answerof-10 \" value=\"34\"><label for=\"answer-id-34\" id=\"answer-label-34\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"103\" height=\"22\" class=\"alignnone wp-image-43\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/sinwt.png\" title=\"sinwt.png\" alt=\"sinwt.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-33\" class=\"answer   answerof-10 \" value=\"33\"><label for=\"answer-id-33\" id=\"answer-label-33\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"37\" height=\"17\" class=\"alignnone wp-image-42\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/e-wt.png\" title=\"e-wt.png\" alt=\"e-wt.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-30\" class=\"answer   answerof-10 \" value=\"30\"><label for=\"answer-id-30\" id=\"answer-label-30\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"18\" class=\"alignnone wp-image-39\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/ejwt.png\" title=\"ejwt.png\" alt=\"ejwt.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-10[]\" id=\"answer-id-31\" class=\"answer   answerof-10 \" value=\"31\"><label for=\"answer-id-31\" id=\"answer-label-31\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"44\" height=\"18\" class=\"alignnone wp-image-40\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/e-jwt.png\" title=\"e-jwt.png\" alt=\"e-jwt.png\"><\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"  watupro-required-9 watupro-question-id-9\">\n\t\t\t<div class=\"question-content\"><div><p>A system is described with y(t)=x(t)*cos(w*t), where x(t) is the input of the system. Is the system linear?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"9\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType9\" class=\"answerTypeCnt5\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-9\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices9\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-9[]\" id=\"answer-id-27\" class=\"answer   answerof-9 \" value=\"27\"><label for=\"answer-id-27\" id=\"answer-label-27\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-9[]\" id=\"answer-id-28\" class=\"answer   answerof-9 \" value=\"28\"><label for=\"answer-id-28\" id=\"answer-label-28\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"  watupro-required-8 watupro-question-id-8\">\n\t\t\t<div class=\"question-content\"><div><p>According to Euler formula\u00a0<img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"18\" class=\"alignnone wp-image-33\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/d1ec3f0180f1c3ae3bdb18d91c6cda33.png\" title=\"d1ec3f0180f1c3ae3bdb18d91c6cda33.png\" alt=\"d1ec3f0180f1c3ae3bdb18d91c6cda33.png\"> equals to ...<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"8\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType8\" class=\"answerTypeCnt6\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-8\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices8\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-26\" class=\"answer   answerof-8 \" value=\"26\"><label for=\"answer-id-26\" id=\"answer-label-26\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"182\" height=\"22\" class=\"alignnone wp-image-37\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/cossin.png\" title=\"cossin.png\" alt=\"cossin.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-23\" class=\"answer   answerof-8 \" value=\"23\"><label for=\"answer-id-23\" id=\"answer-label-23\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"22\" class=\"alignnone wp-image-34\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/cosjsin.png\" title=\"cosjsin.png\" alt=\"cosjsin.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-25\" class=\"answer   answerof-8 \" value=\"25\"><label for=\"answer-id-25\" id=\"answer-label-25\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"190\" height=\"22\" class=\"alignnone wp-image-36\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/sintcos.png\" title=\"sintcos.png\" alt=\"sintcos.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-8[]\" id=\"answer-id-24\" class=\"answer   answerof-8 \" value=\"24\"><label for=\"answer-id-24\" id=\"answer-label-24\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"22\" class=\"alignnone wp-image-35\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/sinjcos.png\" title=\"sinjcos.png\" alt=\"sinjcos.png\"><\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"  watupro-required-11 watupro-question-id-11\">\n\t\t\t<div class=\"question-content\"><div><p>Which\u00a0signal is shown on the figure?<\/p><p><img loading=\"lazy\" decoding=\"async\" width=\"533\" height=\"279\" class=\"alignnone wp-image-46\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_7.png\" title=\"3_7.png\" alt=\"3_7.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_7.png 533w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/39\/3_7-300x157.png 300w\" sizes=\"auto, (max-width: 533px) 100vw, 533px\"><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"11\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType11\" class=\"answerTypeCnt7\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-11\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices11\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-39\" class=\"answer   answerof-11 \" value=\"39\"><label for=\"answer-id-39\" id=\"answer-label-39\" class=\" answer\"><span><p>cos(2*t-Pi\/2)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-40\" class=\"answer   answerof-11 \" value=\"40\"><label for=\"answer-id-40\" id=\"answer-label-40\" class=\" answer\"><span><p>sin(2*t-Pi\/2)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-38\" class=\"answer   answerof-11 \" value=\"38\"><label for=\"answer-id-38\" id=\"answer-label-38\" class=\" answer\"><span><p>2*cos(t+Pi\/2)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-37\" class=\"answer   answerof-11 \" value=\"37\"><label for=\"answer-id-37\" id=\"answer-label-37\" class=\" answer\"><span><p>2*cos(t-Pi\/2)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-41\" class=\"answer   answerof-11 \" value=\"41\"><label for=\"answer-id-41\" id=\"answer-label-41\" class=\" answer\"><span><p>2*sin(2*t+Pi\/2)<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style=\"display:none\" id=\"question-8\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons2\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"><\/div>\t\t  \t\t  \t\t   \n\t\t   \t  \t\t<div><input type=\"button\" name=\"action\" class=\"watupro-submit-button\" onclick=\"WatuPRO.submitResult(event)\" id=\"action-button\" value=\"View Results\">\n\t\t<\/div>\n\t\t<\/div>\n\t\t\n\t<input type=\"hidden\" name=\"quiz_id\" value=\"2\" id=\"watuPROExamID\">\n\t<input type=\"hidden\" name=\"start_time\" id=\"startTime\" value=\"2026-05-10 05:00:05\">\n\t<input type=\"hidden\" name=\"start_timestamp\" id=\"startTimeStamp\" value=\"1778389205\">\n\t<input type=\"hidden\" name=\"question_ids\" value=\"\">\n\t<input type=\"hidden\" name=\"watupro_questions\" value=\"12:43,42,45,44 | 7:18,19,20,21,22 | 6:16,17 | 10:36,29,32,35,34,33,30,31 | 9:27,28 | 8:26,23,25,24 | 11:39,40,38,37,41\">\n\t<input type=\"hidden\" name=\"no_ajax\" value=\"0\">\t\t\t<\/form>\n\t<p>\u00a0<\/p>\n<\/div>\n\n<script type=\"text\/javascript\">\n\/\/jQuery(document).ready(function(){\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \t\nvar question_ids = \"12,7,6,10,9,8,11\";\nWatuPROSettings[2] = {};\nWatuPRO.qArr = question_ids.split(',');\nWatuPRO.exam_id = 2;\t    \nWatuPRO.post_id = 142;\nWatuPRO.store_progress = 0;\nWatuPRO.curCatPage = 1;\nWatuPRO.requiredIDs=\"0,12,7,6,10,9,8,11\".split(\",\");\nWatuPRO.hAppID = \"0.93891800 1778378405\";\nvar url = \"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/show_exam.php\";\nWatuPRO.examMode = 1;\nWatuPRO.siteURL=\"https:\/\/sisu.ut.ee\/signaalitootlus1\/wp-admin\/admin-ajax.php\";\nWatuPRO.emailIsNotRequired = 0;\nWatuPRO.perDecade = 10;\nWatuPROIntel.init(2);\nWatuPRO.inCategoryPages=1;});    \t 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