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Khosrotash's user avatar
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Khosrotash
  • Member for 8 years
  • Last seen more than a month ago
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Ph.D. in numerical analysis. Also a n educator of mathematics. If you want to pop an email 2 me :khosrotash@mathgifs.ir

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question
10
Developing a stochastic differential equation model for concrete fibers
May 26, 2015
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55
Sum of series $\sum \limits_{k=1}^{\infty}\frac{\sin^3 3^k}{3^k}$
40
Find the height of a bar, given the lengths of shadows cast by it and another bar
30
Other Idea to show an inequality $\dfrac{1}{\sqrt 1}+\dfrac{1}{\sqrt 2}+\dfrac{1}{\sqrt 3}+\cdots+\dfrac{1}{\sqrt n}\geq \sqrt n$
27
New Idea to prove $1+2x+3x^2+\cdots=(1-x)^{-2}$
27
Congruence Arithmetic Laws, e.g. in divisibility by $7$ test

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