Dear Maple Users,
I have the following problem:
How to find the best-fitted function P(x,y) = ax+by+cxy+d to the following data:
i= 0, 1, 2, 3, 4 , 5 , 6 , 7
xi= 150, 152, 154, 156, 156, 157, 158, 158
yi= 134, 136, 106, 61, 90, 124, 41, 135
I know that in Maple functions that can solve interpolation and approximation problems with one variable are implemented. But how to solve the problem with two variables?
Best regards,
Wieslaw Kotarski
kotarski@gate.math.us.edu.pl

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Hi to everybody
I'm a new user of Maple
How can I solve this system?
> eq1:=1039.44*Diff(Diff(ck(r),r),r)+80960*Diff(ck(r),r)*Diff(p(r),r)+80960*ck(r)*Diff(Diff(p(r),r),r)=0;
/ 2 \
| d | / d \ / d \
eq1 := 1039.44 |---- ck(r)| + 80960 |--- ck(r)| |--- p(r)|
| 2 | \ dr / \ dr /
\ dr /
/ 2 \
| d |
+ 80960 ck(r) |---- p(r)| = 0

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>
Warning, the name changecoords has been redefined
>

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