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Here we can set *u*=* x ^{n}*, and then after one partial integration, we get an integrand with a factor

*x*. We may then repeat the process until we get to 1. The example on the previous page is trivialy is an example of this, so let us look at a somewhat more complex example.

^{n}Or, written in another way,

Then we can do an integration by parts again.

or,

that we may substitute into the previous integral to get the same result as before.

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