i want to find values of a,b,c such that..
(x-a)^2 + (y-b)^2 + (z-c)^2 less than equal to R(z)
(x-a)^2 + (y-b)^2 + (z-c)^2 greater than equal to r(z)
can anyone help me solving this?? I need to write c++ code for this so which method should b computationally better?