#### MathematicalPhysicist

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(infinity)

y= sum x^i/i^n

i=1

in here http://www.2dcurves.com/exponential/exponentialpo.html it states in the case n=1 it is a logarithm i want to know why?

for all of my knowledge it should be y=x/1+x^2/2+x^3/3+....

is this the taylor expansion series for a logarithm?