User asd

asd

Member for 8 years, 10 months
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Nov 17, 2016
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Dec 14, 2021
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Jan 30

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Feb 12, 2015
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Nov 30, 2016
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Feb 13, 2015

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In how many ways is possible to write a number as the ordered sum of $1$ and $2$

Nov 1, 2016

Proof by induction: $(1+x)^n > 1 + nx+nx^2$

Jan 31, 2015

Help to understand this property: $\int\limits_{ka}^{kb}s\left(\frac{x}{k}\right)dx = k\int\limits_a^bs(x)dx$

Feb 20, 2015

If $f$ is differentiable on $[1,2]$, then $\exists \alpha\in(1,2): f(2)-f(1) = \frac{\alpha^2}{2}f'(\alpha)$

Nov 2, 2016

Let $G$ be a group. Show that $\forall a, b, c \in G$, the elements $abc, bca, cab$ have the same order.

Apr 17, 2017

Proof: $n^p < \frac{(n+1)^{p+1}-n^{p+1}}{p+1} < (n+1)^p$

Feb 11, 2015

Representing a nonnegative integer as the ordered sum of odd numbers

Nov 9, 2016

What's wrong?: Find the infinite sum $S = 1 + \frac{3}{4} + \frac{7}{16} + \frac{15}{64} + \frac{31}{256} + \ldots$

May 13, 2015

Prove: In a ⊿, the bisector of the right angle bisects the Altitude and Median drawn from that same vertex.

Jun 11, 2015

Calculate: $177^{20^{100500}}\pmod{60}$

Mar 22, 2017