Question
$\int\left(3 x^{2}+2\right) e^{-\left(x^{3}+2 x\right)} d x \quad\left(u=x^{3}+2 x\right)$
Step 1
Step 1: First, we are given the integral $\int\left(3 x^{2}+2\right) e^{-\left(x^{3}+2 x\right)} d x$ and we are told to let $u=x^{3}+2 x$. Show more…
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