#### blackbrandt

##### That Darn College Student

- Joined
- Mar 18, 2012

- Messages
- 9,281

- Reaction score
- 41

Hello people!

I'd like to propose a challenge. Find all values of x so the following is true:

I've managed to figure out the following:

The formula for the series is:

(EDIT: Should be (2n)! in the denominator)

And also, I've proven that it's possible for an answer to exist.

Thoughts?

I'd like to propose a challenge. Find all values of x so the following is true:

I've managed to figure out the following:

The formula for the series is:

(EDIT: Should be (2n)! in the denominator)

And also, I've proven that it's possible for an answer to exist.

Thoughts?

Last edited: