「你髮如雪紛飛了眼淚...」

Aspiring chemist. 20 years old. Chem/biochem double major, c/o 2015 at the University of Washington. Graduated from KMHS and GRCC in 2012.

A little place for things I find amusing, ramblings about my life, and my love affair with science.

Power series expansions and sigma notation for the trig functions sine and cosine.

Note that sine, as an odd function, only has terms with odd powers in its expansion, while cosine, being even, has terms with even powers.

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    therefore cosx + isinx = e^(ix)
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    Brings back so many memories ;)
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