What functino has this Taylor Expansion?

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Something came up while I was trying to solve a problem.

This is a Taylor Expansion of a function:
x+(x^2)/2+(x^3)/3+(x^4)/4+(x^5)/5+(...)

What's the function associated with it?
 
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Arian.D said:
-ln(1-x) I guess.

Correct. Thanks.
 

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