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I'm new in this forum. I would like to know how to calculate to obtain the function expression of some given coordinate points(x,y). For example, if I have 6 coordinate points which are

(x,y)

(0.23, 4.5)

(0.25, 6.5)

(0.35, 8.8)

(0.43, 15)

(0.45, 17)

(0.5, 25)

The (x,y) relation are apparently not linearized. It seems to by y=a.exp(b.x). How to calculate to derive the equation of y in term of y=f(x)?

Thank you.

Bundit