# Math Help - Somebody help me, I have calculus test tomorow

1. ## Somebody help me, I have calculus test tomorow

Somebody help me, I have calculus test tomorow

My teacher was teaching Fourier Series, and he said that those questions is going to be in the test
Somebody help me, I don't have any idea how to solve it

uxx-uxy-6uyy=x
uxx-5uxy+6uyy=y
uxx-3uxy-4uyy=x

Thanks

2. Originally Posted by nathanfsu
Somebody help me, I have calculus test tomorow

My teacher was teaching Fourier Series, and he said that those questions is going to be in the test
Somebody help me, I don't have any idea how to solve it

uxx-uxy-6uyy=x
uxx-5uxy+6uyy=y
uxx-3uxy-4uyy=x

Thanks
Boundary conditions?

(I assume your notation is attempting to represent partial derivatives)

3. No Boundary conditions, indeed it is partial derivatives