1. The problem statement, all variables and given/known data y'=xsec^2(x^2) 2. The attempt at a solution dy/dx=xsec^2(x^2) dy=xsec^2(x^2)dx [tex]\int[/tex]dy=[tex]\int[/tex]xsec^2(x^2)dx lny= (here i'll do a u substitution) ---- u=x^2 du=1/3x^3dx ... and here's my problem. It seems like that creates a very difficult u-sub to try and manage. Any suggestions/help?