Given three vectors x,y,z. Find four coefficients c = [cxx cxy cyy c00], such that z = cxx*x.^2+cxy*x.*y+cyy*y.^2+c00.

For example,

 x = [ 0  0  1  1  2  2  3  3]
 y = [ 0  1  0  1  0  1  0  1]
 z = [-4 -1 -3 -2  0 -1  5  2]

then

 z = x.^2-2*x.*y+3*y.^2-4

and

 c = [cxx cxy cyy c00] = [1 -2 3 -4]
Solve

Solution Stats

152 Solutions

48 Solvers

Last Solution submitted on May 25, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers48

Chris Cleveland George Berken David Hill Lorenzo

Suggested Problems

More from this Author99

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!