The Stack Overflow podcast is back! Listen to an interview with our new CEO.
Brevan Ellefsen

 61 Is it possible to represent every irrational number as a (limit of) an infinite sum of rational numbers? 31 Where is the absolute value when computing antiderivatives? 23 Factorial question: number of trailing zeroes in 125! 14 Can a polynomial be expressed as an infinite sum of non-polynomial functions? 13 Why does Wolfram Alpha say that $\infty^\infty$ results in “complex infinity”?

### Reputation (12,285)

 +10 Slick way to calculate $\lim_{T\to\infty}\frac{1}{2T}\int_{-T}^T(\sin(t+1)-1)^4\,dt$ by hand? +5 False Proof that $\sqrt{4}$ is Irrational +10 Is there a way to insert Log base-something into Google Calculator? +10 Show $\sum_{k=m}^n {k \choose r} = {n+1 \choose r+1} - {m \choose r+1}$

### Questions (36)

 26 Odd Number of Cats? 20 Sheaf Theory for Complex Analysis 11 Proof of identity for $\pi$: $\frac{\pi}{3} = \frac{2}{\sqrt{2+\sqrt{3}}}\frac{2}{\sqrt{2+\sqrt{2+\sqrt{3}}}}\cdots$ 7 False Proof that $\sqrt{4}$ is Irrational 7 “Ordering” of Complex Plane

### Tags (218)

 272 calculus × 140 66 limits × 42 122 integration × 69 64 irrational-numbers × 2 88 sequences-and-series × 63 58 real-analysis × 45 77 algebra-precalculus × 48 53 trigonometry × 37 67 complex-analysis × 42 52 derivatives × 35