Am I even supposed to do the integral?

[ultimablah]

Homework Statement

I am to find the partial derivatives f_xx, f_xy, and f_yy off(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

Homework Equations

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?

 

[Dick]

No, your aren't expected to compute the integral. Use the Liebniz rule http://en.wikipedia.org/wiki/Leibniz_integral_rule