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# Find The Common Function

APCALC-GYKRSU

If the Maclaurin series for $f(x)$ is given by:

$$\sum _{ n=0 }^{ \infty }{ { ( -1 ) }^{ n }{ x }^{ n } }$$

Identify which common function represents the series.

A

$\ln x$

B

$\cfrac{1}{x}$

C

$\cfrac{1}{1+x}$

D

$e^{-x}$