3. The value(s) of b for which the series E=50 is convergent are: 4 n3b2 B)는 C)- D)- (수-w-) n (") (M E) None of them.

Q: (b) Prove that the real power series n!r" converges for only r 0. %3D

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A: Given

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A: Here center of the series is -3 so radius should be measured from -3

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