- #1
jegues
- 1,097
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Homework Statement
Convolve,
[tex]2e^{-t}u(t) \ast e^{t}u(-t) \quad \text{Where u(t) is the step function}[/tex]
Homework Equations
The Attempt at a Solution
[tex]2e^{t}\int_{?}^{?}e^{-\tau}u(\tau) e^{-\tau}u(-t+\tau)d \tau[/tex]
I'm not sure what the limits on my integral should be, the u(-t) is confusing me. Shouldn't the second function only be nonzero from -infinity to 0 and the other from to +infinity?
Thanks again!
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