Question

Let f:R2→R be defined by
f(x,y)= 1 if xy≥0
0 if xy<0.
(a) Show that the partial derivative fx(0) and fy(0) exist.

Answer 1

Please help. I have a midterm tomorrow.

Answer 2

does you question mean to ask if the partial derivatives
\(f_x(0,0)\), and \(f_y(0,0)\) exist ?

Answer 3

I would assume yes because I am not sure what else it would mean.

Answer 4

Hello? Are you still there/????

Answer 5

im not sure

Answer 6

try chain rule?

Answer 7

how? there is no function.

Answer 8

anyone?

Answer 9

HELLO?

Answer 10

THIS WEBSITE IS USELESS