I have some points and want to find a function from them. For example, $(-2,4),(0,0),(1,1),(5,25)$. I don't have a function that generates the points.
closed as too localized by Ajasja, Oleksandr R., Artes, Yves Klett, m_goldberg Apr 26 at 20:30
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If you can hazard a guess as to the form of the function, then you can fit almost anything. For example, here is your data:
Let's see how well a second order polynomial fits:
The answer is: it fits really well! You can also pick other functional forms, to see how well they fit. You can read about this kind of function-finding in the help file for
Here you can see how well the function fits the points by plotting:
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