Let f(x, y) = sqrt( abs(xy))
Verify that the x partial derivative and the y partial derivative are both 0 at the origin.
Once I take the partial derivative, I can't substitute (0, 0) because then I would get 0/0. How do I go around this problem?
Let f(x, y) = sqrt( abs(xy))
Verify that the x partial derivative and the y partial derivative are both 0 at the origin.
Once I take the partial derivative, I can't substitute (0, 0) because then I would get 0/0. How do I go around this problem?