Evaluate the integral: ∫(3x2−2x+1)ex3−x2+xdx
Substitute u back into the integral, we get ex3−x2+x
Step 1 :First, let's make a substitution. We set u=x3−x2+x, then the differential of u is du=(3x2−2x+1)dx
Step 2 :Substitute u and du into the integral, we get ∫eudu
Step 3 :The integral of eu with respect to u is eu
Step 4 :Substitute u back into the integral, we get ex3−x2+x