Calculus please help
posted by Brian .
please help I can not understand this.
I need an implicit form answer for the general solution of differential equation dy/dx=2(e^xe^x)/y^2(e^x+e^x)^4 with (y>0). I have separated the y^2 to the left hand side to become 1/3y^3 but have no idea how to make the right hand side ready forintegration and what its integral is. Please help.

The integration is relatively straightforward because you will notice that the numerator is the derivative of the base of the denominator, thus a substitution using u=(e^x+e^(x)) will do the job.
For more details, see:
http://www.jiskha.com/display.cgi?id=1297960703