Chapter 9, Problem 27RE

To determine

Whether integration by parts or substitution should be used to compute the

indefinite integral ${\displaystyle \int \left(500-4x\right)e^{-x/2}dx}$. If substitution, indicate the substitution to be made. If by

parts, indicate the functions $f\left(x\right)$ and $g\left(x\right)$ to be used.