Mathematics
DatBoi
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12
$\lim_{x\to\infty}\frac{1-\cos x}{1-\sin x}$
Mar 4
12
Evaluate $\sum_{r=0}^n 2^{n-r} \binom{n+r}{r}$
May 5
6
Calculating the limit $\lim\limits_{\theta \to 0} \frac{\sin \theta}{\tan \theta}$
Feb 21
6
For $\alpha\in(0^\circ;90^\circ)$ simplify $\sin^2\alpha+\tan^2\alpha+\sin^2\alpha.\cos^2\alpha+\cos^4\alpha$
Aug 29 '20
5
Cauchy's MVT-Lagrange's MVT-Rolle's theorem independence
Sep 2 '20
5
General formula for $\int_a^b(x-a)^m(x-b)^ndx$
Nov 4 '20
5
Prove $ \sum_{n=1}^{\infty} \frac{2}{4n^2-1} = 1$
Nov 23 '20
4
Find $\lim_{n\to \infty} \left [\tan \frac{\pi}{2n}\tan \frac{2\pi}{2n}..\tan \frac{n\pi}{2n}\right]^{1/n}$
Feb 4
4
$y'=\frac{x-y+2}{x+y-1}$
Feb 16
4
Shortest distance between orthocenter and origin
Aug 16
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13
Why does Stockfish suggest h4 here?
5
Covalent atomic radii: oxygen vs nitrogen

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