if z f(x,y) where x=u-av,y=u+av prove that a^2d^2z/du^2-d^2z/dv^2=4a^2d^2z/dxdy
if z f(x,y) where x=u-av,y=u+av prove that a^2d^2z/du^2-d^2z/dv^2=4a^2d^2z/dxdy

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago