{"id":55,"date":"2025-01-31T09:22:49","date_gmt":"2025-01-31T07:22:49","guid":{"rendered":"https:\/\/sisu.ut.ee\/signaalitootlus2\/kontrollkusimused-1-osa-kohta\/"},"modified":"2025-01-31T09:22:49","modified_gmt":"2025-01-31T07:22:49","slug":"kontrollkusimused-1-osa-kohta","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/signaalitootlus2\/kontrollkusimused-1-osa-kohta\/","title":{"rendered":"Kontrollk\u00fcsimused 1. 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-11 watupro-question-id-11\">\n\t\t\t<div class=\"question-content\"><div><p>Convolution in time domain corresponds to simple multiplication in frequency domain. x1(t) ** x2(t)\u00a0 &lt;--&gt;\u00a0 X1(w)*X2(w), where ** means convolution and * multiplication.<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"11\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType11\" class=\"answerTypeCnt1\" 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-22\" class=\"answer   answerof-11 \" value=\"22\"><label for=\"answer-id-22\" id=\"answer-label-22\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-11[]\" id=\"answer-id-23\" class=\"answer   answerof-11 \" value=\"23\"><label for=\"answer-id-23\" id=\"answer-label-23\" class=\" answer\"><span>False<\/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-12 watupro-question-id-12\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following is true?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"12\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType12\" class=\"answerTypeCnt2\" value=\"checkbox\"><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=\"checkbox\" name=\"answer-12[]\" id=\"answer-id-24\" class=\"answer   answerof-12 \" value=\"24\"><label for=\"answer-id-24\" id=\"answer-label-24\" class=\" answer\"><span><p>The Fourier spectrum calculated of a discrete argument signal with Discrete Fourier Transform is also always a discrete argument function.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-12[]\" id=\"answer-id-25\" class=\"answer   answerof-12 \" value=\"25\"><label for=\"answer-id-25\" id=\"answer-label-25\" class=\" answer\"><span><p>The Discrete Fourier Transform of a periodic discrete argument signal is always discrete and periodic.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-12[]\" id=\"answer-id-26\" class=\"answer   answerof-12 \" value=\"26\"><label for=\"answer-id-26\" id=\"answer-label-26\" class=\" answer\"><span><p>The Discrete Fourier Transform of a non-periodic discrete argument signal is continuous and periodic.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-12[]\" id=\"answer-id-27\" class=\"answer   answerof-12 \" value=\"27\"><label for=\"answer-id-27\" id=\"answer-label-27\" class=\" answer\"><span><p>The Discrete Fourier Transform of a non-periodic discrete argument signal is periodic discrete argument function.<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"  watupro-required-13 watupro-question-id-13\">\n\t\t\t<div class=\"question-content\"><div><p>Each signal can be decomposed into even and odd portions. Which of the following is true regarding the Fourier transform of real signals?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"13\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType13\" class=\"answerTypeCnt3\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-13\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices13\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-28\" class=\"answer   answerof-13 \" value=\"28\"><label for=\"answer-id-28\" id=\"answer-label-28\" class=\" answer\"><span><p>Real part of the Fourier transform corresponds to even portion of the signal.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-29\" class=\"answer   answerof-13 \" value=\"29\"><label for=\"answer-id-29\" id=\"answer-label-29\" class=\" answer\"><span><p>Imaginary part of the Fourier transform corresponds to odd portion of the signal.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-30\" class=\"answer   answerof-13 \" value=\"30\"><label for=\"answer-id-30\" id=\"answer-label-30\" class=\" answer\"><span><p>Real part of the Fourier transform corresponds to odd portion of the signal.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-31\" class=\"answer   answerof-13 \" value=\"31\"><label for=\"answer-id-31\" id=\"answer-label-31\" class=\" answer\"><span><p>Imaginary part of the Fourier transform corresponds to even portion of the signal.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-13[]\" id=\"answer-id-32\" class=\"answer   answerof-13 \" value=\"32\"><label for=\"answer-id-32\" id=\"answer-label-32\" class=\" answer\"><span><p>Imaginary and even part of the Fourier transform corresponds to even portion of the signal.<\/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-14 watupro-question-id-14\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following is true for all real signals?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"14\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType14\" class=\"answerTypeCnt4\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-14\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices14\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-33\" class=\"answer   answerof-14 \" value=\"33\"><label for=\"answer-id-33\" id=\"answer-label-33\" class=\" answer\"><span><p>Negative frequencies contain the phase information of the signal. By comparing the positive and negative counterparts it is possible to tell the complex phase of each frequency component.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-34\" class=\"answer   answerof-14 \" value=\"34\"><label for=\"answer-id-34\" id=\"answer-label-34\" class=\" answer\"><span><p>Negative frequencies of the Fourier spectrum show the phase spectrum, whereas positive frequencies correspond to power spectrum.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-35\" class=\"answer   answerof-14 \" value=\"35\"><label for=\"answer-id-35\" id=\"answer-label-35\" class=\" answer\"><span><p>Negative frequencies of the Fourier spectrum do not contain additional information. The negative side is exact copy of the positive spectrum side.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-14[]\" id=\"answer-id-36\" class=\"answer   answerof-14 \" value=\"36\"><label for=\"answer-id-36\" id=\"answer-label-36\" class=\" answer\"><span><p>Negative frequencies of the Fourier spectrum do not contain additional information. It is possible to calculate the negative frequencies side by taking complex conjugate of the positive side and reflecting the result to negative side.<\/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-15 watupro-question-id-15\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following is true regarding Fourier Transform properties?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"15\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType15\" class=\"answerTypeCnt5\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-15\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices15\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-37\" class=\"answer   answerof-15 \" value=\"37\"><label for=\"answer-id-37\" id=\"answer-label-37\" class=\" answer\"><span><p>By up-scaling the time-domain representation by a factor of 3 all the corresponding frequency components will be scaled up by a factor of 3.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-38\" class=\"answer   answerof-15 \" value=\"38\"><label for=\"answer-id-38\" id=\"answer-label-38\" class=\" answer\"><span><p>Superposition holds for Fourier Transform. It is equivalent to take the Fourier transforms of n signals and sum the spectra after that<\/p><p>with<\/p><p>adding n signals and computing the Fourier Transform after that.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-39\" class=\"answer   answerof-15 \" value=\"39\"><label for=\"answer-id-39\" id=\"answer-label-39\" class=\" answer\"><span><p>By up-scaling the time-domain representation by a factor of 3 all the corresponding frequency components will be scaled down by a factor of 1\/3.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-40\" class=\"answer   answerof-15 \" value=\"40\"><label for=\"answer-id-40\" id=\"answer-label-40\" class=\" answer\"><span><p>Superposition do not hold for Fourier Transform, because Fourier Transform is not a linear operation.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-15[]\" id=\"answer-id-41\" class=\"answer   answerof-15 \" value=\"41\"><label for=\"answer-id-41\" id=\"answer-label-41\" class=\" answer\"><span><p>Fourier Transform is not linear, because additivity does not hold.<\/p><\/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-16 watupro-question-id-16\">\n\t\t\t<div class=\"question-content\"><div><p>Which of the following is true for all real signals?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"16\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType16\" class=\"answerTypeCnt6\" value=\"checkbox\"><input type=\"hidden\" id=\"watupro-required-question-16\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices16\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-16[]\" id=\"answer-id-42\" class=\"answer   answerof-16 \" value=\"42\"><label for=\"answer-id-42\" id=\"answer-label-42\" class=\" answer\"><span><p>Even signals in time domain are purely real and even in the frequency domain.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-16[]\" id=\"answer-id-43\" class=\"answer   answerof-16 \" value=\"43\"><label for=\"answer-id-43\" id=\"answer-label-43\" class=\" answer\"><span><p>Odd signals in the time domain are purely imaginary and odd in the frequency domain.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-16[]\" id=\"answer-id-44\" class=\"answer   answerof-16 \" value=\"44\"><label for=\"answer-id-44\" id=\"answer-label-44\" class=\" answer\"><span><p>Odd signals in time domain are purely real and even in the frequency domain.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-16[]\" id=\"answer-id-45\" class=\"answer   answerof-16 \" value=\"45\"><label for=\"answer-id-45\" id=\"answer-label-45\" class=\" answer\"><span><p>Even signals in the time domain are purely imaginary and odd in the frequency domain.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-16[]\" id=\"answer-id-46\" class=\"answer   answerof-16 \" value=\"46\"><label for=\"answer-id-46\" id=\"answer-label-46\" class=\" answer\"><span><p>Even signals in the time domain are purely imaginary and even in the frequency domain.<\/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-17 watupro-question-id-17\">\n\t\t\t<div class=\"question-content\"><div><div class=\"qtext\"><p>The Fourier Transform of a box signal ( e.g. u(t+3)-u(t-3) ) is a sinc function. The extremes of the box signal are constant function y=1 and Dirac delta function with extreme narrow width box.<\/p><p>By scaling the box signal narrower its corresponding Fourier transform (sinc function) will widen and lower.<\/p><\/div><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"17\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType17\" class=\"answerTypeCnt7\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-17\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices17\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-17[]\" id=\"answer-id-47\" class=\"answer   answerof-17 \" value=\"47\"><label for=\"answer-id-47\" id=\"answer-label-47\" class=\" answer\"><span>True<\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-17[]\" id=\"answer-id-48\" class=\"answer   answerof-17 \" value=\"48\"><label for=\"answer-id-48\" id=\"answer-label-48\" class=\" answer\"><span>False<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-8\" style=\";\"><div id=\"questionWrap-8\" class=\"  watupro-required-18 watupro-question-id-18\">\n\t\t\t<div class=\"question-content\"><p>In case X(w) is the Fourier Transform of x(t), X1(w) is the Fourier Transform of x1(t) and X2(w) is the Fourier Transform of x2(t). Connect the pairs.<\/p><div class=\"question-choices\"><table class=\"question-choices watupro-matrix-droppable\" id=\"watuPROMatrixDroppable_18\"><tr><td class=\"watupro-matrix-left-cell\">a1*x1(t)+a2*x2(t)<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable18\" id=\"watuPRODroppableCell49\"><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, 'watuPRODroppableCell49', 0);return false;\">a1*X1(w)+a2*X2(w)<!--WTPMD531c1f24d0576be7a469824d3a2c49862--><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, 'watuPRODroppableCell49', 1);return false;\">j*w*X(w)<!--WTPMD536c56d61373fb704a064a107ce29256f--><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, 'watuPRODroppableCell49', 2);return false;\">e^(-j*w*t0)*X(w)<!--WTPMD5a632440e350b93d29c868fcfb00ec732--><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, 'watuPRODroppableCell49', 3);return false;\">( X(w\/a) )\/|a|<!--WTPMD53e5bda484d3690b17bf484c4e8e8b3b7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-18 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell49\" name=\"matrix-left-49\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">x(t-t0)<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable18\" id=\"watuPRODroppableCell50\"><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, 'watuPRODroppableCell50', 0);return false;\">a1*X1(w)+a2*X2(w)<!--WTPMD531c1f24d0576be7a469824d3a2c49862--><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, 'watuPRODroppableCell50', 1);return false;\">j*w*X(w)<!--WTPMD536c56d61373fb704a064a107ce29256f--><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, 'watuPRODroppableCell50', 2);return false;\">e^(-j*w*t0)*X(w)<!--WTPMD5a632440e350b93d29c868fcfb00ec732--><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, 'watuPRODroppableCell50', 3);return false;\">( X(w\/a) )\/|a|<!--WTPMD53e5bda484d3690b17bf484c4e8e8b3b7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-18 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell50\" name=\"matrix-left-50\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">dx(t)\/dt<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable18\" id=\"watuPRODroppableCell51\"><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, 'watuPRODroppableCell51', 0);return false;\">a1*X1(w)+a2*X2(w)<!--WTPMD531c1f24d0576be7a469824d3a2c49862--><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, 'watuPRODroppableCell51', 1);return false;\">j*w*X(w)<!--WTPMD536c56d61373fb704a064a107ce29256f--><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, 'watuPRODroppableCell51', 2);return false;\">e^(-j*w*t0)*X(w)<!--WTPMD5a632440e350b93d29c868fcfb00ec732--><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, 'watuPRODroppableCell51', 3);return false;\">( X(w\/a) )\/|a|<!--WTPMD53e5bda484d3690b17bf484c4e8e8b3b7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-18 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell51\" name=\"matrix-left-51\" value=\"\"><\/td><\/tr><tr><td class=\"watupro-matrix-left-cell\">x(a*t)<\/td>\n\t\t\t\t\t\t<td class=\"watupro-matrix-right-cell watuPRODroppable18\" id=\"watuPRODroppableCell52\"><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, 'watuPRODroppableCell52', 0);return false;\">a1*X1(w)+a2*X2(w)<!--WTPMD531c1f24d0576be7a469824d3a2c49862--><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, 'watuPRODroppableCell52', 1);return false;\">j*w*X(w)<!--WTPMD536c56d61373fb704a064a107ce29256f--><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, 'watuPRODroppableCell52', 2);return false;\">e^(-j*w*t0)*X(w)<!--WTPMD5a632440e350b93d29c868fcfb00ec732--><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, 'watuPRODroppableCell52', 3);return false;\">( X(w\/a) )\/|a|<!--WTPMD53e5bda484d3690b17bf484c4e8e8b3b7--><p class=\"watupro-nmatrix-unselect\">Unselect<\/p><\/div><\/div><\/div><input type=\"hidden\" class=\"answerof-18 watupro-nmatrix-answer-field\" id=\"field-watuPRODroppableCell52\" name=\"matrix-left-52\" value=\"\"><\/td><\/tr><\/table><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_8\" value=\"18\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType18\" class=\"answerTypeCnt8\" value=\"nmatrix\"><input type=\"hidden\" id=\"watupro-required-question-18\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div><\/div><div class=\"watu-question \" id=\"question-9\" style=\";\"><div id=\"questionWrap-9\" class=\"  watupro-required-19 watupro-question-id-19\">\n\t\t\t<div class=\"question-content\"><div><p>Most of the Fourier Transform properties apply both to the continuous and discrete cases, but not all. Which of the following is true?<\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_9\" value=\"19\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType19\" class=\"answerTypeCnt9\" value=\"radio\"><input type=\"hidden\" id=\"watupro-required-question-19\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices19\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-19[]\" id=\"answer-id-53\" class=\"answer   answerof-19 \" value=\"53\"><label for=\"answer-id-53\" id=\"answer-label-53\" class=\" answer\"><span><p>Complex conjugate property holds only for continuous case, e.g. x*(t)\u00a0 &lt;--&gt;\u00a0 X*(-w)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-19[]\" id=\"answer-id-54\" class=\"answer   answerof-19 \" value=\"54\"><label for=\"answer-id-54\" id=\"answer-label-54\" class=\" answer\"><span><p>Complex conjugate property holds only for discrete case, e.g. x*[n]\u00a0 &lt;--&gt;\u00a0 X*(-\u03a9)<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-19[]\" id=\"answer-id-55\" class=\"answer   answerof-19 \" value=\"55\"><label for=\"answer-id-55\" id=\"answer-label-55\" class=\" answer\"><span><p>Complex conjugate property holds for both discrete and continuous case, e.g. x*[n]\u00a0 &lt;--&gt;\u00a0 X*(-\u03a9) and x*(t)\u00a0 &lt;--&gt;\u00a0 X*(-w)<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style=\"display:none\" id=\"question-10\">\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; 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