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# Fit Curve a Graph with Shape like y^2 = x

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Adrita Bima Adi on 15 Feb 2021
Answered: Aditya Patil on 18 Feb 2021
I would like to use fit curve for my data that shape like y^2 = x graph (parabola rotated 90° to the right).
I am using custom equation like y=a*sqrt(x+b)+c but y^2 = x does not necessarily mean y=sqrt(x).
How should I change my custom equation? Thank you.
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### Answers (1)

Aditya Patil on 18 Feb 2021
generally, a function is expected to map only one y value for each x value. As you have two values for each input, you need to redesign your problem. There are two workarounds for this.
You can use two separate equations, that is, and .
Alternately, you can reverse the dependency. That is, use .
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