Question

Integral of sin(x^2+3) ? Please help

Answer 1

Wolframalpha refers to Freznel integrals in its answer. It is far from a simple solution, so are you sure you have the right function?

Answer 2

Not sure:/ My original function is: integral of (x*cos(y)*sin(x*x+3) dx dy boundaries [4,3]x[4,3]

Answer 3

Couldn't you just use the substitution \( u=x^{2}+3 \) for the x integration (that would also take care of the x in front of the coinse....). The y is only in the cosine so the y integration shouldn't be an issue.

Answer 4

Thank you, I got it