# Am I even supposed to do the integral?

1. Oct 18, 2009

### ultimablah

1. The problem statement, all variables and given/known data
I am to find the partial derivatives fxx, fxy, and fyy of

f(x,y)=

The integral from y squared to the square root of x of cos(t squared) dt

Accidentally posted, was editing to get the TEX to work
2. Relevant equations

3. The attempt at a solution

All rules of integration I know fail, and attempting to use an integral calculator leads me to a term "Fresnel", which has never before been explained in my class. This leads me to assume I'm not supposed to take the integral; how, then, do I account for sqrt(x) and y^2?

Last edited by a moderator: Oct 18, 2009
2. Oct 18, 2009