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Hard maths problem can you help

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1. For the above power series i get -e/3<x<e/3 as the radius of convergence is that correct?

Any help would be appreciated
2. ANYONE?
3. (Original post by opi453)

For the above power series i get -e/3<x<e/3 as the radius of convergence is that correct?

Any help would be appreciated
can't see the pic
4. Shows as a broken image.
5. That is incorrect: HINT: The 3 is just a constant, so is irrelevant.
6. (Original post by BlueSam3)
That is incorrect: HINT: The 3 is just a constant, so is irrelevant.
Is it -e<x<e
7. (Original post by opi453)
Is it -e<x<e
Yes.
8. (Original post by opi453)

For the above power series i get -e/3<x<e/3 as the radius of convergence is that correct?

Any help would be appreciated
Cannot see the picture !!!!!!!!!!

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