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Integration by parts replaces an integral of $u \, dv$ with $uv$ minus an integral of $v \, du$. The goal is to choose factors that make the new integral easier to evaluate.

Conditions: The integrand can be expressed as a product of two functions.; The chosen factors $u$ and $dv$ must be differentiable and integrable respectively.

Integration by parts replaces an integral of $u \, dv$ with $uv$ minus an integral of $v \, du$. The goal is to choose factors that make the new integral easier to evaluate.

Conditions: The integrand can be expressed as a product of two functions.; The chosen factors $u$ and $dv$ must be differentiable and integrable respectively.