1-) INT (ch^2 x)(sh^2x)dx =?
2-) INT dx/(sin^3 x+cos^3 x)=?
3-) INT [x]dx/(x^2+[x]^2)=?
ıf you answer these question,I will be so happy pls pls....
The other two problems are awefully familiar. I believe Berkanatci asked the same two questions in an earlier post (though neither has been answered yet).
I don't know where to begin to solve number 1 (I don't know the hyperbolic functions very well), but I'll try to solve 2.