Which of the following statements is true for the series the summation from n=0 to infinity of (1)^n and 5/4^n?
a) The series diverges because it is geometric with r = 5/4 and a = –1.
b) The series converges to 4 because it is geometric with r = 1/4 and a = 5.
c) The series converges to –1 because it is geometric with r = 1/4 and
a = 5/4.
d) The series diverges because it is geometric with r = 5/4 a = 1.
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2 answers

well, r = 5/4, so ...

Isn't the series convergent though?
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answered by Alice
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