- #1

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## Homework Statement

http://img10.imageshack.us/img10/3390/55486934.jpg [Broken]

## Homework Equations

This is what I was thinking: tan−1(∏x)−tan−1(x)=∫[itex]^{g(x)}_{f(x)}[/itex]h(y)dy

## The Attempt at a Solution

I don't really understand how to do this question

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