Mathematics
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G Cab
  • Member for 7 years, 1 month
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  • Rieti, Italy
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I am an engineer, presently retired

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All Questions Answers
Score Newest
answer
46
Finding three unknowns from three equations. Solvable? If so, how?
Mar 11, 2018
answer
33
Consecutively Adding Sines
Mar 8, 2018
answer
32
Equation of a "tilted" sine
Sep 15, 2017
answer
24
Mathematical ideas that took long to define rigorously
Feb 3, 2018
answer
22
What is the tangent at a sharp point on a curve?
Mar 18, 2019
answer
17
A ping-pong ball lying inside a wine glass
Sep 25, 2016
answer
12
If I roll three dice at the same time, how many ways the sides can sum up to $13$?
Mar 2, 2016
answer
11
Why won't a series converge if the limit of the sequence is 0?
Oct 19, 2016
question
11
An eely function $\mu (n):\;\;\prod\limits_{k = 0}^{n - 1} {\left( {\mu (n) - \mu (k)} \right)} = 1$
Dec 7, 2020
answer
11
Prove $\int_{0}^{\pi/2} \int_{0}^{\pi/2} \frac{\theta\cot\theta-\varphi\cot\varphi}{\cos\theta-\cos\varphi} \text{d}\varphi\text{d}\theta = \pi\ln2$
Nov 16, 2020
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Inverse of a matrix with binomial entries
5
Why is the Roman acronym SPQR and not SPR?

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