- #1
bobred
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Homework Statement
I have the two functions below and have to find the convolution [itex]\beta * L[/itex]
Homework Equations
Assume a<1
[tex]
\beta(x)=\begin{cases}
\frac{\pi}{4a}\cos\left(\frac{\pi x}{2a}\right) & \left|x\right|<a\\
0 & \left|x\right|\geq a
\end{cases}
[/tex]
[tex]
L(x)=\begin{cases}
1 & \left|x\right|<1\\
0 & \left|x\right|\geq 1
\end{cases}
[/tex]
The Attempt at a Solution
[tex]\beta * L=\int^\infty_{-\infty}\beta(y)L(x-y)dy=\int^\infty_{-\infty}\beta(x-y)L(y)dy[/tex]
What I am unsure about is the limits and which integral to use. Any hints would be greatly appreciated.