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An infinite geometric series has first four terms 1- 4x + 16x^2 - 64x^3 +... The series is convergent.

(a) Find the set of possible values of x for which the series converges.
Reply 1
Original post by Ljm2001
An infinite geometric series has first four terms 1- 4x + 16x^2 - 64x^3 +... The series is convergent.

(a) Find the set of possible values of x for which the series converges.

Do you know when a geometric series is convergent? If not then you should read through your textbook again.
Original post by Ljm2001
An infinite geometric series has first four terms 1- 4x + 16x^2 - 64x^3 +... The series is convergent.

(a) Find the set of possible values of x for which the series converges.


In addition to above, you should first identify what the common ratio rr is in this series.
Badly worded problem.

It's easier than you think ...
Reply 4
Does anybody know which paper this question is from? If so can u please send it to me

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