A couple of years ago, I drew a notebook cover for my Calculus II class. People seemed to like it, a

A couple of years ago, I drew a notebook cover for my Calculus II class. People seemed to like it, and now that I’ve got Adobe Illustrator skillz I’ve polished it up and made a design out of it! 

Click the source if you want a print, or if you want it for a t-shirt, you can reserve one for $20 at http://www.teespring.com/WhatTheMath.