x=cost^3
y=sint^3
x^2+(x*y)^(1%3)=cost^6+(cost^3*sint^3)(1%3)
integral(cost^6+(cost^3*sint^3)(1%3),t,o,pi)

Kreyszig-9.2_19-U (last edited 2010-12-18 10:22:45 by mamatha)