Question: How to do simultaneous fitting

Dear All,

 

I am a new Maple user and I am still unaware of a lots of fancy features of Maple. I have a problem of simultaneous fitting polynomials. I wish that I could have help from you. Say, we have two polynomials of two variables,

f1(x,y)=a1+a2*x+a3*y+(a4+a5)*x2+(a4-a5)*y2;

f2(x,y)=b1+b2*x+b3*y+(a4-a5)*x2+(a4+a5)*y2.

Note that a4 and a5 are shared by the two polynomials. I would like to fit the two polynomials against their respective data set. Is there anyway I can do it using Maple? Any of your help is highly appreciated!

 

Best regards,

 

Toby

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