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how to fit implicit function to data?

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Alessandraro
Alessandraro 2018-12-10
关闭： Rik 2018-12-10
I have these data points:
data=[0 1
0.355257 0.726061
0.749002 0.382696
1 0
2.401699 -0.9817
3.049682 -1.49588
4.105308 -2.51708
3.419108 -2.79514
1.784289 -2.188
0.763907 -1.56124
0 -1];
I need to fit this implicit function to the data:
f = @(x,y) abs(x)^a + abs(y)^b +c*x*y-1
where a,b, c are the three parameters to be estimated.
Can anyone help me, please?

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