How to find the equation of an exponential function given two points?

An exponential function is given by

Given two points, (m, n) and (p, q), we find the equation of the exponential function as follows:



From (1), we have:



Therefore, the equation of an exponential function given two points (m, n) and (p, q) is given by



[i.e. you can choose any set of points and substitute the values in the equation above to get the exponential equation]

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