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OpenStudy (anonymous):
find the values of x for which the series converges of summation from n=1 to infinity of (-7)^n (x^n) I got the interval of convergence is (-1/7, 1/7) but now how do i find the sum of the series for those values of x. REALLY confused on this
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OpenStudy (anonymous):
@saifoo.khan help out bro
OpenStudy (tkhunny):
Have you considered the Ratio Test?
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