I always have problems integrating a multiplication equation. How do I integrate an equation like this one:
I tried doing it by parts but still canot solve it.
You could not use by parts?
Clean up;
By parts for the second part;
Does the last part of the integral seem familiar?
Clean up:
Expand the brackets;
The trick now is to send the last part to the left.
Simplify;
Multiply by 9/13;
Expand and there you are!