Mikhail Tikhonov
  • Member for 6 years, 4 months
  • Last seen more than a month ago
3 answers
8 votes
220 views
3 bookmarks
Random walk with 3 cases.
1 answers
5 votes
164 views
Functional equation $f(x) = f(3x) + \tanh(x)$
2 answers
4 votes
336 views
Function of bounded variation and Riemann Stieltjes integral.
1 answers
3 votes
159 views
3 bookmarks
Asymptotic expansion of $\int_{-\pi}^{\pi} dk \frac{1-\cos(km)}{\sqrt{(2-\cos(k))^2 -1}}$
3 answers
3 votes
355 views
1 bookmarks
Indefinite integral of $\int\sqrt{x^2-1}dx$
1 answers
2 votes
93 views
1 bookmarks
How to solve $y'(x) = y(x) + y(x)^2 + x y(x)^3$?
1 answers
2 votes
117 views
Evaluation of $\int\limits_{0}^{2\pi}\frac{a\cos x -1}{(a^2+1-2a\cos x)^{3/2}}dx.$
2 answers
2 votes
286 views
Around De Moivre–Laplace theorem/Poisson law
2 answers
1 votes
75 views
Proof that $\exp(\hat{L}) \hat{a} \exp(-\hat{L}) = \hat{a} + [\hat{L}, \hat{a}] + [\hat{L}, [\hat{L}, \hat{a}]]/2\dots$ .
3 answers
1 votes
71 views
Calculating limit $\lim_{x,y\to \{0;0\} }(x^2+y^2)^{x^2 y^2} $
1 answers
0 votes
43 views
Proof that eigenvalues of $(\hat{L^+})^n (\hat{L})^n ≥ 0$
2 answers
0 votes
42 views
Switch to new variables
2 answers
-2 votes
125 views
Proof that $\lim{\frac{ln(n)}{n^3}} = 0$