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This is a bit confusing.

I need to call my Calculus Professor to figure out which shipping method is better. I need to use Fourier transform in order to calculate the cost-benefit ratio of the shipping methods.

Calculus Textbook by James Stewart

Calculus 5th Edition bt James Stewart

I read the news just today that James Stewart, the mathematician who authored books on Calculus, died on December 4th, 2014.

I took a look at my bookshelf and immediately found a Calculus Textbook that Stewart authored. Stewart was a violinist and that explains why his books feature violin on the cover.