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Mathematics
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Zakhurf
  • Member for 4 years, 6 months
  • Last seen more than a month ago
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35
Finding the Center of Mass of a disk when a part of it is cut out.
Jul 17, 2020
7
Primes of the form $x^2 + n y^2$ using theta function
Dec 9, 2022
6
Remarquable identities $f(n) = \frac{a^n}{(a-b)(a-c)} + \frac{b^n}{(b-a)(b-c)} + \frac{c^n}{(c-a)(c-b)}$
May 18, 2022
6
Generalizing Ramanujan cubic denesting formula to higher powers
May 19, 2022
6
Show $\prod\limits_{k=1}^{+\infty}\coth\left({\frac{\pi k}{2}}\right)=\left({\frac{2}{\pi}}\right)^{\frac{1}{4}}\Gamma\left({\frac{3}{4}}\right)$
Dec 11, 2022
5
Trig and de Moivre's theorem
Nov 23, 2022
4
Closed form of $\sqrt{2 + \sqrt{2 + ... + \sqrt{2 + \sqrt{x}}}}$
Jul 17, 2020
2
Proof of $\sum_{n= 0}^{\infty} \frac{\cos(nx)}{n!} = e^{\cos(x)} \cos(\sin x)$ without using complex numbers
Jan 9, 2020
2
Evaluating the power series of the multifactorial reciprocal $\sum_{n=0}^\infty \frac{x^n}{n!!...!!}$
Jul 18, 2020
2
How to show if $x(t)=e^{\sin(t)}$ it is periodic or not?
Jul 16, 2020