How to pass math exam.

http://www.huffingtonpost.com/steven-strogatz/the-3-most-confusing-thin_b_2296216.html

I’m actually trying to figure out that one right now so if you have any suggestion, please, help me, any feedback is more than welcome.

Photo by http://www.huffingtonpost.com/steven-strogatz/the-3-most-confusing-thin_b_2296216.html

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