Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

New to MATLAB?

Problem 486. Surface Fit z(x,y)

Created by AMITAVA BISWAS

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]

Tags

Problem Group

Solution Statistics

30 correct solutions 29 incorrect solutions
Last solution submitted on Jan 05, 2015

Problem Comments