1. The problem statement, all variables and given/known data 1) antiderivative of ((t^2)+2)/((t^3)+6t+3) dt 2) antiderivative of r(sqrt((r^2)+2))dr help please with these 2. Relevant equations 3. The attempt at a solution #2 let u = r^2 + 2 du/dr = 2r du = 2rdr?? i dont knoww!!