Recent content by harryjobs

*conditional convergent series

I don't know what is a convergent series.what should I refer to.

series expansion: ln(1+x)=1-x^2/2+x^3/3-x^4/4+x^5/5+......∞ ln(1+1)=1-1/2+1/3-1/4+1/5...∞ ln(2)=(1+1/3+1/5+1/7...)-(1/2+1/4+1/6+1/8...) ln(2)=(1+1/3+...)-2(1/2+1/4+1/6+1/8...)+(1/2+1/4+1/6+1/8...) ln(2)=(1+1/2+1/3+1/4+1/5+1/6...)-2(1/2+1/4+1/6...)...