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Last active August 26, 2015 15:02 — forked from ion1/e.md
Trying to derive an equation for f from df(x)/dx = f(x), f(0) = 1

Trying to derive an equation for f from df(x)/dx = f(x), f(0) = 1

Let g(x) = lim{n→∞} (1+x/n)^n

g(0) = 1

dg(x)/dx = d/dx lim{n→∞} (1+x/n)^n = lim{n→∞} d/dx (1+x/n)^n

= lim{n→∞} n * (1+x/n)^(n-1) * (1/n) = lim{n→∞} (1+x/n)^n / (1+x/n)