# Integration by parts

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Determine the indefinite integral: z = (Integral Sign or "Long S")20xe^-4x dx. I got z = 5xe^-4x + 5/4 e^-4x + C - Does that seem right?

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#### Solution Preview

You 99.99% got it.

There is an sign error.

the final answer ...

#### Solution Summary

The solution utilizes "integration by parts" technique to obtain the primitive function.

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