# Math Help - Convolution Problem

1. ## Convolution Problem

I have the problem below I understand how convolution works but I don't understand where this x has come from and how to use it. Do I assume it is x(t)?

$s(t) = 0$ (for t <= 0)
$s(t) = 1$ (for t > 0)

convolve $y = h * x$

where $h(t) = a^t s(t)$ for some $a \Re$ and u = s

How do I solve this?

2. Originally Posted by jezzyjez
I have the problem below I understand how convolution works but I don't understand where this x has come from and how to use it. Do I assume it is x(t)?

$s(t) = 0$ (for t <= 0)
$s(t) = 1$ (for t > 0)

convolve $y = h * x$

where $h(t) = a^t s(t)$ for some $a \Re$ and u = s

How do I solve this?
Go back and check the question, the $x$ in the convolution is a function of $t$ so yes it is $x(t)$ that is being referred to.

CB