Question

If
g x y u v ( , ) ( , ) =
, where

2 2
u x y = −
and
v xy = 2
then prove that

2 2 2 2

2 2

2 2 2 2 4( ) g g

x y

x y u v
       
+ = + +  

Answer 1

Answer:

22 22 4 cos GG e Plus equal to 22 22