Formula q_205 (Q152)

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Language	Label	Description	Also known as
English	Formula q_205	No description defined

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arqmath formula id

q_205

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Defining formula

x-{\frac {x^{3}}{3\times 3!}}+{\frac {x^{5}}{5\times 5!}}-{\frac {x^{7}}{7\times 7!}}+\cdots =\sum _{n=0}^{\infty }(-1)^{n}{\frac {x^{(2n+1)}}{(2n+1)\times (2n+1)!}}

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