Ben Alpert

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1,624 reputation

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bio	website	zetamac.com/arithmetic
	location	United States
	age	19
visits	member for	1 year, 10 months
	seen	2 days ago
stats	profile views	244

I've been doing math competitions since 6th grade; my best competition performances were 6th nationally at ARML 2011 and a tie for 6th nationally on the 2010 AIME (score 14/15).

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13 Answers

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35	How can you prove that the square root of two is irrational?
14	Why is the 2nd derivative written as $\frac{\mathrm d^2y}{\mathrm dx^2}$?
12	Probability that a stick randomly broken in two places can form a triangle
10	Balance chemical equations without trial and error?
9	Combinations of selecting n objects with k different types

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1,624 Reputation

+65	Probability of Heads in a coin
+2	Showing $\sum _{k=1} 1/k^2 = \pi^2/6$
+2	Probability of Heads in a coin
+10	Combinations of selecting n objects with k different types

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9 Questions

votes activity newest

12	Proving Stewart's theorem without trig
9	Finding $\int_0^{\pi/2} \sin x\,dx$
9	Tiling a 3 by 2n rectangle with dominoes
6	Probability that two people see each other at the coffee shop
6	Counting how many hands of cards use all four suits

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29 Tags

35 irrational-numbers	12 elementary-number-theory × 2
35 number-theory	12 induction × 2
22 calculus × 3	12 monte-carlo
17 probability × 3	10 linear-algebra
14 notation	10 chemistry

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25 Accounts

	Stack Overflow	12,842 rep	34269
$TeX - LaTeX$	TeX - LaTeX	1,676 rep	1023
$Mathematics$	Mathematics	1,624 rep	717
	Server Fault	1,539 rep	615
	Musical Practice and Performance♦	1,135 rep	820

24 Badges

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Taxonomist	Organizer
Enlightened × 3	Citizen Patrol
Nice Answer × 4	Quorum
Yearling	Good Answer
Nice Question × 2	Beta

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154 Votes Cast

all time			by type			month		week
144	up		42	question		4		4
10	down		112	answer		4		4

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