# Integration by parts

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?

Â© BrainMass Inc. brainmass.com February 24, 2021, 2:26 pm ad1c9bdddfhttps://brainmass.com/math/integrals/integration-parts-primitive-function-20907

#### 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.

$2.19