How Do I Plot the Convolution of Two Discrete Functions in Matlab?

[ELE 2009]

Homework Statement

I want to plot the convolution of 2 discrete funtions, for example: rect₁ [n] and sin (2*pi*n/9), how can i do that?

thanks!

Homework Equations

The Attempt at a Solution

 

[MATLABdude]

1) Make two vectors containing data points for your function over your range of interest.

2) Use the MATLAB conv function:
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/conv.html