Example_3_8.m - echo on Repeat commands in command window...

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echo on % Repeat commands in command window. clear all % Clear work area of previous work. % Example 3.8 syms vx ix vC vL vxn ixn vCn vLn k a w t L C % Names for symbolic objects must start with a letter and % contain only alpha-numeric characters. % Next, we define ix. ix=k*t^2*exp(-a*t)*sin(w*t) % Next, we substitute k=3, a=2, and w=1 % into ix and denote the result as ixn. ixn = subs(ix,[k a w],[3 2 1]) % Next, we plot ixn for t ranging from 0 to 10 s. ezplot(ixn,[0,10]) vL=L*diff(ix,t) % L times the derivative of ix with respect to t. % A nicer display is produced with the commands: vL = simple(vL);
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