Question

MATLAB如何进行多元非线性拟合?x=[1,4,2,3,6,9,4,9] y=[2,5,7,3,4,9,0,7] z=

Answer 1

由最小二乘法求得,二元非线性函数.

z=-0.7055*x^2-0.2840*x*y+0.5205*y^2+6.9613*x-1.3290*y+6.0030

拟合精度为

R^2 = 0.9792