marty cohen

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Martin Cohen is a retired computer programmer who loves dancing (favorites are West Coast Swing, Waltz, Tango, and Foxtrot), writing (but not revising) poems, and solving math problems.

He can also be reached at mjcohen@acm.org.

	6,205 reputation	bio	website		visits	member for	1 year, 10 months
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404 Answers

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12	Proof that $\lim_{n\rightarrow \infty} \sqrt[n]{n}=1$
11	Theorems with an extraordinary exception or a small number of sporadic exceptions
9	Without calculating limit directly show that it is equal to zero
9	The last few digits of $0^0$ are $\ldots0000000001$ (according to WolframAlpha).
9	If you have a $1$ in $36$ chance of winning an event. What is the probability that you will win at least once in $36$ tries?

6,205 Reputation

+113	Why is 987654321/123456789 = 8.0000000729?

7 Questions

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26	Why is 987654321/123456789 = 8.0000000729?
13	Possible generalizations of $\sum_{k=1}^n \cos k$ being bounded
8	Which is the better approximation to $e$?
4	What is the most elementary proof that $\lim_{n \to \infty} (1+1/n)^n$ exists?
4	A “tricky” integral: $\int_0^{\infty} t e^{-nct} (1-e^{-ct})^m dt$

165 Tags

104 calculus × 75	29 trigonometry × 13
68 real-analysis × 53	23 algebra-precalculus × 27
63 sequences-and-series × 47	22 elementary-number-theory × 19
58 limit × 42	20 number-theory × 20
40 homework × 42	18 big-list × 8