1. The problem statement, all variables and given/known data Integral [sec(x^2)/ 81 + tan (x^2)] 2. Relevant equations sinx^2 + cos x^2=1 sec= 1/cos 3. The attempt at a solution integral[ 1/81cos (x^2) + 81(sin(x^2)/cos(x^2))] = 1/81 integral [1/ 1/cos(x^2)]= 1/8 integral[cos(x^2)] = 1/8 sin(x^2) This was my answer. But this is not right according to multiple choice quiz. Please let me know how to do this problem. thanks.