## math for fun

## Forum Posts

Mr k

Jun 05, 2019

In Math Problems

Hello everyone! Recently realized that ln(x) equals "1 + 1/2 + 1/3 + ... - (x-1)/x + 1/(x+1) + 1/(x+2) + ... - (x-1)/2x + + 1/(2x+1) + ...". I knew ln(2)=1 - 1/2 + 1/3 - 1/4 + ... from BpRp's videos. Can someone explain this? (I checked ln(3), ln(4) and ln(5) with calculator up to 50th term each).

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# Mr k

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