I am doing some experiments and i got some results which i plot into a graph. The graph at small x values (x<15) gave random scatter plot but in large values more than 1000 it lookes like an negative exponential plot (similar to figure). How i can find equation for this scatter graph? can this method given in this tutorial can be used for finding equation in scatter graph?
How to derive formula from a exponential scattered plot
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functional-equations
graphing-functions