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## Homework Statement

Hi, I'm having trouble finding the indefinite integral of an equation.

## Homework Equations

The function is (2x-13)/[(x^2-2x+4)^0.5]

## The Attempt at a Solution

I thought it was a good idea to let u=x^2-2x+4, hence du/dx= 2x-2.

From that I got [-11/(u^0.5)].du but evaluating this gives me -22(u^0.5), which I don't beleive is right.

Did I make a silly mistake or is my approach completely wrong? I am also having similar trouble finding the integral of [1+(1/t)]^5/(t^2).

Any help or advice would be very much appreciated, thank you.