a question about implicit functions

[losheungwai]

determine whether implicit functions u(x,y) and v(x,y) exist in some neighbour of (x0,y0), given the values (x0,y0,u0,v0) = (1,1,0,-1) satisfying the relations :
x sin u + y^2 -v^2 = 0
(x+v)^2 - sin(uy)=0

how do i solve this question?

 

[yazigi]

it's about the Simultaneous equations. Good luck.