Question

if x= u+v and y= u-v then ​

Answer 1

Answer:

x = u+v

dx/du = 1

dx /dv =1

y = u-v

dy/du= 1

dy/dv = -1

d(x,y)/d(u,v) = determinant of 1. 1

1. -1

= (-1)-1

= -2