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I am using Curve fitting for two unknown variables. While I am running the program it is displaying some error. Function is shown in below

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Shree Pannaga 2022-8-26

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评论： Shree Pannaga 2022-8-26

Y=1-(1-(X).^B).^A. In this function A and B are unknown parameter. When I run this program it is giving some error. Please help me out to over come this problem.

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Mathieu NOE 2022-8-26

Tipe of the day : if you don't share your code it's going to be difficult to help you

tx

Shree Pannaga 2022-8-26

I am not writing any codes. I am just solving this equation using Curve fitter tool. It is easier to run the program in curve fitter tool. Please I request you to look at the problem and help me out.

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Bruno Luong 2022-8-26

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Y=1-(1-(X).^B).^A

Such expression returns complex value X < 0, or (1-(X).^B) < 0.

Make sure your code avoid or can deal with such cases.

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Torsten 2022-8-26

编辑：Torsten 2022-8-26

Are your data for X always >0 and <1 ?

Is A supposed to be positive ?

Shree Pannaga 2022-8-26

Yes sir... It is solved sir. We need to keep upper bound and lower bound limit form -1 to infinity,.. Thank you for your help.

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