How to know x value if I have y value from graph

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Chuanjung Lin
Chuanjung Lin 2018 年 1 月 30 日
回答済み: Arun Mathamkode 2018 年 2 月 2 日
Hi all, I have fitted the curve, and plot it.
Now, I have y value, it equal to 100 (y=100),
how to extract x value from fitting curve? Because original data do not have x value when y=100.
Thank you

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回答 (1 件)

Arun Mathamkode
Arun Mathamkode 2018 年 2 月 2 日
I assume you will have the model which you used to fit the data and the coefficients. You can invert the model and find X from Y.
The following answer also will be helpful to you.
https://www.mathworks.com/matlabcentral/answers/181251-how-can-i-find-x-for-given-y-value-in-a-fitted-curve

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