Definite Integral with U-Substitution
I have an integral with ∫ (b=0, a=-1) and the inside function is (2t)/[(3+t2)3]dt. The directions tell me to "Evaluate the definite integral by making a u-substitution and integrating from u(a) to u(b). How do I go about this?
Please include as much work and detail as you are able to. Thank you for your help in advance!