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# Interval Of Convergence

APCALC-BWAKGJ

Find the interval of convergence for the power series:

$$\sum _{ n=0 }^{ \infty }{ { \left( \cfrac { x }{ 3 } \right) }^{ n } }$$

A

$(-\cfrac{1}{3}, \cfrac{1}{3})$

B

$[-\cfrac{1}{3},\cfrac{1}{3}]$

C

$[-3, 3]$

D

$(-3, 3)$