Solve the following differential equation: `x\ sqrt(1-y^2)dx+y\ sqrt(1-x^2)\ dy=0`

Solve the following differential equation: x sqrt(1-y^(2))dx+y sqrt(1-x)dy=0

Find the general solution of each of the following differential equations: x sqrt(1+y^(2))dx +y sqrt(1+x^(2))dy =0

Solve the following differential equation: \ y\ sqrt(1+x^2)+x\ sqrt(1+y^(2\ ))(dy)/(dx)\ =0

Solve the following differential equation: \ x(dy)/(dx)-y=2\ sqrt(y^2-x^2)

Solve the following differential equation: \ x(dy)/(dx)-y=2\ sqrt(y^2-x^2)

Solve the following differential equations. sqrt(1+x^(2))dx +sqrt(1+y^(2))dy=0

Solve the following differential equations : dy/dx+sqrt((1-y^2)/(1-x^2))=0

Solve the following differntial equations: sqrt(1+x^2)dy+sqrt(1+y^2)dx=0 .