Mathematics
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24 Ways of showing $\sum_\limits{n=1}^{\infty}\ln(1+1/n)$ to be divergent Jul 30 '16
21 What is the easiest way to integrate $\left(\frac{1-x}{1+x}\right)^{1/2}?$ Nov 27 '12
19 Properties of the number 50 Oct 30 '12
19 The word “integral” in calculus unrelated to “integral” / “integer” in algebra? Jul 27 '15
18 Prove that 16, 1156, 111556, 11115556, 1111155556… are squares. Jun 10 '12
16 $\log_9 71$ or $\log_8 61$ Nov 3 '12
15 Thoughts on the Collatz conjecture; integers added to powers of 2 Apr 26 '12
13 Funny identities Jun 19 '12
13 Calculating $\ln(1+\sqrt3)$ Aug 10 '14
13 Meaning of math symbol ~ Jun 30 '14
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