Question

1.Find the differential equations of the space curve in which the two families of surfaces u=x^2-y^2=c1 andv=y^2-z^2=c2 intersect.
2. Find value of n for which the equation (n-1)^2 u_xx-y^2n u_yy=ny^(2n-1) u_y is parabolic or hyperbolic.