Here are some MATLAB tutorials:
http://www.math.ohiou.edu/courses/matlab/ (homeworks)
http://math.rice.edu/~polking/odesoft/ (differential equations)
http://www.ent.ohiou.edu/~urieli/odes/odes.html (differential equations)
http://www.mathworks.com/support/tech-notes/1500/1510.html#MLeqnts (Mathworks)
http://www.mathworks.com/downloads/web_downloads/userfiles (Mathworks)
