Mathematics
Yulia V's user avatar
Yulia V's user avatar
Yulia V's user avatar
Yulia V
  • Member for 10 years, 4 months
  • Last seen more than a week ago
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Handy tools:

  1. http://www.geogebra.org/ for making pictures for geometrical problems
  2. WolframAlpha for solving differential equations, e.g. wolframalpha.com/input/?i=y%27%27[x]Exp[-y[x]]%3D1
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All Questions Answers
Score Newest
answer
13
How to rotate a vector by 90 degree?
Oct 4, 2014
answer
9
Determinant of $a_{i,j}=(x_i+y_j)^k$
Oct 7, 2014
answer
5
Solve $y'=1+x-(1+2x)y+xy^2$
Oct 4, 2014
answer
5
Integers and integer functions
Oct 9, 2014
answer
4
Proofs of identity for product of binomial coefficients
Oct 8, 2014
answer
4
Prove $\min \left\{ x+y:\begin{pmatrix} x \\ y \end{pmatrix} \in M \right\}$ exists
Feb 6, 2020
answer
3
Determinant of the matrix $\binom{m_i}{j-1}$
Oct 7, 2014
answer
3
Probability of a player winning again after i games
Oct 20, 2014
answer
3
Integration $I_n=\int_{0}^{1}\frac{dx}{(x^n+1)(\sqrt[n]{x^n+1})}$
Oct 23, 2014
question
2
Uniqueness of $a_1, a_2, \dots, a_N \in \mathbb{Z}_+ : A^N=\sum_{i=1}^N a_i^N$ given $A\in\mathbb{N},N>2$
Oct 14, 2014
Top Meta posts
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28
Same person has asked the same question 6 (!) times - what can be done?
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30
Why did Persia adopt the movable-type printing so late?
27
When did horseback riding start? Are Doosheh cave petroglyphs authentic and correctly dated?
20
How to use NPOI to read Excel spreadsheet that contains empty cells?
19
Why have more countries cut the diplomatic ties with Israel than with Russia?
17
How to do lists comprehension (compact way to transform a list into another list) in c#?

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