Problem:

Attempt:

Quote:

Answer:

Correct Answer:

Can someone help?

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- May 5th 2009, 05:12 PMFallen186The integral of 1/ 11+x^2
**Problem:**

**Attempt:**

Quote:

**Answer:**

**Correct Answer:**

Can someone help? - May 5th 2009, 05:25 PMJameson
I don't see how the second line easily follows:

Did you square the sum in the denominator? Maybe you just did a lot of simplification but I don't see how you got to the this line.

edit: Well don't listen to me, skeeter says you're right, so I believe him. I didn't think you were necessarily wrong, I just didn't see the work between lines. - May 5th 2009, 05:27 PMskeeter
you are correct ... the "correct" answer is not.

- May 5th 2009, 05:58 PMFallen186
- May 5th 2009, 06:18 PMPinkk
Uhh... . Those two answers are equal to one another.

And I don't know if this has already been defined in your class, but:

And for this problem, .