How to extend the graph from a limited range of data to the axis

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Tb 2021-2-11

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回答： Shubham Khatri 2021-2-21

Hello,

I have the following graph:

And I would like to make it so that it intersects the y-axis, following the trend of the given datapoints.

Thanks for the help.

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KSSV 2021-2-11

编辑：KSSV 2021-2-11

I already mentioned.... it is an extrapolation..you need to be careful.

Tb 2021-2-11

编辑：Tb 2021-2-11

Ok, how can extrapolation be used for polyfit as you mentioned initially @KSSV? I would like to compare the results and see which one is more accurate. Thanks

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Shubham Khatri 2021-2-21

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Hello,

To extrapolate a curve, you need to have any 2 of the following:

The equation of the curve itself (using which the plot of the curve can be made)
The degree of the equation of the curve, If you know the degree of the equation of the curve, you can use polynomial fitting to find the approximate equation of the curve.

Hope it helps