Question

find maximum and minimum of x^2-xy+y^2-2x+y​

Answer 1

Step-by-step explanation:

$$f_x^{'} = 2x+2y = 2(x+y) = 0$$

⟹x=−y

f

y

′

=2x+4y+6=0

or,2y=−6

y=−3 and x=3

Putting in the equation, we get

9−18+18−18+10

⟹1