Hi there. I have been given this problem:

I want to find the partial of y at the point (0,0) of the following.

f(x,y) = [2x^2 +3y^2]/[x^2+y^2] when (x,y) =/= (0,0)

f(x,y) = 0 when (x,y) = (0,0)

There is discontinuity at the point I am supposed to find the partial of y to, so can I say the function is not differentiable at that point?