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  3. question 1 a let xt be a signal with xt...

Question: question 1 a let xt be a signal with xt...

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Question 1 (a) Let x(t) be a signal with x(t) -0fort<4 and t>7. For each signal given below, determine the values of t for which it is guaranteed to be zero i)x(t-3) iii) x(-1+2) 6 marks (b) Determine whether or not each of the following signals is periodic. If a signal is periodic, specify its fundamental period. i) x(t)-5sin(2rt) +cos(4a) 11) e [8 marks (c) Sketch a continuous-time signal f(t) defined below in time domain. t +1, for-1ts1 2, for sts2 2-t, for 2sts3 0, otherwise f(t) And then sketch and label carefully f(-t+2) [8 marks

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