Question

x² - y?
If y{?
f (x, y) = x² + y2
if (x, y)+(0,0)
Fii
0,
if (x, y)=(0,0)
fx(0,0) and fy(0,0).
If AEL(R",R") and if reR", show that
​

Answer 1

Answer:

$4x48y6? \times \frac{?}{?} \times \frac{?}{?} \di2622$

guhu