How do you find the indefinite integral of #int 2*x*arctan(7*x) dx#?
1 Answer
Explanation:
Use integration-by-parts to start doing this integral. Let
To do this second integral, first use long division of polynomials to write
On this last integral, do a substitution:
Now you can put everything together as follows:
You should take the time to check this answer by differentiation (using the product rule and chain rule).