Ok, so what I need to do is;(adsbygoogle = window.adsbygoogle || []).push({});

Given the functions;

x1(t)= tu(t)-tu(t-1) and x2(t)=10e^-4tu(t), do the following:

1. Plot x1(t) and x2(t) using MATLAB.

2. Use MATLAB to find and plot x(t)=x1(t)* x2(t), where * denotes convolution.

3. Find x(t)=x1(t)* x2(t) by hand using Laplace transforms.

4. Plot the result of part 3 in MATLAB and compare it to that found in part 2.

Okay, what I had trouble was defing u(t). Since, according to my book it says that u(t) = 0 if t<0, and u(t) = 1 if t>0. Also that; u(t-1) = 1 if 1<t<infinite, and u(t-1) = 0 if t<1. So,

what I tried to do was to define the two functions, one would be u(t) and the other u(t-1). So, I had two functions(m.files) named, u, and v. v being u(t-1). So, I would use them on my original program. the two function would look like;

u(t) =

v(t) = u(t-1)Code (Text):function u = u(t)

if t > 0

u = 1;

else

u = 0;

end

my original program would look like;Code (Text):function v = v(t)

if t > 1

v = 1;

else

v = 0;

end

I really thought that would work, but bleh, it doesn't. Can anyone help me telling me what's wrong?Code (Text):t = 0:0.1:10;

x1 = t*u - t*v;

x2 = 10*exp(-4*t)*u;

plot(t,x1)

plot(t,x2)

y = conv(x1,x2);

plot(t,y)

return;

PS: I have no experience programming with MATLAB. I only knowvery basicC. So, yeah, please bare with me.

Edwin

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# Homework Help: Help with a MATLAB assigment.

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