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Question: Non-linear data fit (Regression)?

Question:Non-linear data fit (Regression)?

J4James 355 Maple
fit
December 19 2013
2

Hello every one,

restart;with(stats):

with(stats[statplots]):
with(plots):

x1_values:=[0.1, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, 0.80];

x2_values:=[1, 2, 3, 4, 5, 6, 7, 8];

x3_values:=[11, 12, 13, 14, 15, 16, 17, 18];

x4_values:=[10, 20, 30, 40, 50, 60, 70, 80];

y_values:=[30, 40, 60, 70, 90, 120, 150, 200];

How to fit the above data into the following equation

y=a+b*x1+c*x2+d*x3+e*x4+f*x1^2+g*x2^2+h*x3^2+i*x4^2+j*x1*x2+k*x1*x3+l*x1*x4

+m*x2*x3+n*x2*x4+p*x3*x4;

Thanks

 

 

 
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