What are the most important power series to memorise?

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Answer 1 · 2014-10-19T14:50:54

Useful Maclaurin Series

#1/{1-x}=sum_{n=0}^infty x^n#

#e^x=sum_{n=0}^infty{x^n}/{n!}#

#sinx=sum_{n=0}^infty(-1)^n{x^{2n+1}}/{(2n+1)!}#

#cosx=sum_{n=0}^infty(-1)^n{x^{2n}}/{(2n)!}#

I hope that this was helpful.