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bio website mathkonspekt.tumblr.com
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visits member for 2 years, 7 months
seen 22 hours ago

Aug
30
comment Sum over all non-evil numbers
Do you know that $\sum 1/n=\infty$
Jul
26
comment What is $P[a, b]$?
Polinoms on [a,b] ?
Jul
2
awarded  Curious
Jun
6
awarded  Announcer
Jun
5
answered Solving $2^{-x} = \frac{1}{3}\cdot \sqrt{x} +1$
Jun
2
comment Pointwise convergence in two variables.
Note that the function $\chi_B(r,x)$ is not continuous on the sphere.
Jun
2
accepted How to esimate $\inf\int|\nabla g|^p\,dx$
Jun
2
accepted Compute $ \int\sin(x^2)\, dx + \int \sqrt{\arcsin t}\, dt$
Jun
2
awarded  Custodian
Jun
2
reviewed Approve suggested edit on Similarity transformation of a linear operator
Jun
2
answered Similarity transformation of a linear operator
Jun
1
answered Evaluating the definite integral of a trig function via complex analysis methods.
Jun
1
answered Which probability should use to approximate Binomail distribution?
May
31
answered Tricky improper integral
May
30
awarded  Announcer
May
24
comment curve integral - intersection between plane and sphere
It will be nice if you post your solution here. @Angelica
May
24
comment curve integral - intersection between plane and sphere
Hint: try parametrization for $\gamma$ like this $$ x(t) = \cos t, \quad y(t) = \sin t, \quad z(t) = 1 - \sin t, \quad t\in[0,2\pi]. $$
May
24
comment curve integral - intersection between plane and sphere
I think it would be better to parametrize curve $\gamma$.
May
23
accepted Find $\sum\frac{a(n)}{n(n+1)}$, where $a(n)$ — number of 1's in binary expansion of n.
May
23
comment Find $\sum\frac{a(n)}{n(n+1)}$, where $a(n)$ — number of 1's in binary expansion of n.
So, the answer between $1$ and $2$.