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trashiv
what is e in mathmatics
natural logarithm, go search it.
The exponential number e is the base of natural logarithms. Also be aware that \[f\prime e ^{x}=e ^{x}\] so e^x has a rate of change proportional to itself.
Definition of e is attached. General info at: http://www.mathsisfun.com/numbers/e-eulers-number.html
Just another constant like $$\pi$$
Which brings to mind the interesting equation \[e ^{i \pi}=-1\]