Salech Alhasov

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1,962 reputation

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bio	website	mathhelpboards.com/…
	location	Israel
	age	26
visits	member for	1 year, 2 months
	seen	Apr 19 at 8:11
stats	profile views	280

Just listen...Tchaikovsky - Symphony n.6 "Pathétique"

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84 Answers

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12	Proving $\int_{0}^{+\infty} e^{-x^2} dx = \frac{\sqrt \pi}{2}$
12	Finding $\lim\limits_{x\to 0}\frac{\sin{3x}}{x}$
5	Trig limit of $\lim\limits_{x\to 0}\frac{\sin{6x}}{\sin{2x}}$
5	Proof that $\int_{-1}^{1}\sqrt{1-x^2}dx=\frac{\pi}{2}$?
4	Convert $2^{25}$ to its equivalent in base 10 (i.e. $10^?$)

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1,962 Reputation

+10	Show $\int_0^\infty x^{-\alpha}\sin x dx$ exists for $\alpha \in (0,2)$.
+5	Is there a $\sigma$-algebra on $\mathbb{R}$ strictly between the Borel and Lebesgue algebras?
+10	If $f'$ is bounded, then $f$ is uniformly continuous
+10	Pigeonhole Principle and Geometry

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8 Questions

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17	Is there a $\sigma$-algebra on $\mathbb{R}$ strictly between the Borel and Lebesgue algebras?
7	How can one prove that $\sum_{k=1}^{\infty}\prod_{m=1}^{2k}\text{ctg}\frac{m\pi}{2k+1}=\frac{\pi}{4}-1$?
4	Prove that $w=\frac{\sqrt{z^2+z+1}}{z^2-3z+2}$ analytic on $\|z\|<1$
4	Well-ordered set, $\langle\mathbb{N},<^{(n)}\rangle$.
3	Question involving prime numbers, brothers numbers.

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61 Tags

55 calculus × 19	12 linear-algebra × 8
28 limit × 9	12 improper-integrals
27 homework × 14	11 algebra-precalculus × 5
22 real-analysis × 19	10 elementary-number-theory × 9
20 integral × 6	6 sequences-and-series × 8

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2 Accounts

$Mathematics Stack Exchange$	Mathematics	1,962 rep	519
$TeX - LaTeX Stack Exchange$	TeX - LaTeX	101 rep	1

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