- #1

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## Homework Statement

[tex]\int\sqrt{4+9x^{2}}dx[/tex]

## Homework Equations

Pythagorean Identities?

## The Attempt at a Solution

I find it sort of cumbersome to use the special formatting here, so I hope it is okay that I just photocopied my work on paper.

You can see how far I made it, but now I am stuck. I am pretty sure I need to use integration by parts to finish the problem, but I am not sure how.

Sorry about all the erasure marks, they showed up kind of dark.