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Homework1Help_mae143b

Homework1Help_mae143b - Assistance with Homework 1 and...

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Assistance with Homework 1 and matlab Question 1 types With matlab, you can check the syntax and methodology of commands like impulse to easy ways; type ”help impulse” in the command window or hit the yellow question mark or the Help menu to open up the Help Window, then search for impulse. This latter approach gives examples and explanations. Here’s how I would check whether my solution for the inverse Laplace transform of 1 s +1 , which is e - t 1( t ) coincides with matlab’s version. >> sys = tf(1,[1 1]); >> [y,t]=impulse(sys); >> plot(t,y,’r * ’,t,exp(-t),’ko’);xlabel(’Time (sec)’);ylabel(’Response’);shg >> legend(’matlab’,’me’) The first line sets up the transfer function (system) sys = 1 s +1 . The second line computes the impulse response of sys and stores the response values in vector y with their corresponding time values in vector t . Remember this is a continuous-time problem and the solution of the underlying differential equation need not be a uniformly spaced times.
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