Let xy x, y) # (0,0). +y fx, y)= then, (a) f(x, y) is discontinuous at (0, 0) ) fx, y) is continuous at (0, 0) (c) i0, 0)=1 (d) f,0, 0)=1

Let xy x, y) # (0,0). +y fx, y)= Then, (a) f(x, y) is discontinuous at (0, 0) ) fx, y) is continuous at (0, 0) (c) i0, 0)=1 (d) f,0, 0)=1