Can anyone help me solve this? My answer is 5. My friend's got 17. Im confused.
Last edited by weijing85; April 19th 2013 at 07:15 PM. Reason: missing attachment
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Originally Posted by weijing85 Can anyone help me solve this? My answer is 5. My friend's got 17. Im confused. The series is convergent if and only if . In your case, , so . If , then you get . If , you get . Thus your interval of convergence is So your friend is correct.
Last edited by Gusbob; April 20th 2013 at 02:27 AM.
thanks! ((:
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