- #1

cathy

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## Homework Statement

So I solved this problem

∑ (-1)^n (x+5)^n by finding the sum of the series to be 1/(x+6), which was correct. I am stuck on the second part of the problem asking for interval notation.

It says: Determine, in interval notation, the values of x for which the series converges. Use "-I" for negative infinity, "I" for infinity.

**2. The attempt at a solution**

I know that -x+5 > 1, but how to I turn this into interval notation?

I'm stuck on every one of these problems on my math hw, unfortunately. Please advise if you can. Thanks in advance.

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