- #1

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## Homework Statement

Integral x^3sqrt(4x^2 -x^4) dx

## Homework Equations

Maybe something from a table

## The Attempt at a Solution

I pulled the x^2 our from under the square root.

∫ x^4 (sqrt(4-x^2)) dx

I'm not sure how I can do this one.

Maybe it can fit the forum ∫ usinu du ?