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Mathematics
Bob Hanlon's user avatar
Bob Hanlon's user avatar
Bob Hanlon's user avatar
Bob Hanlon
  • Member for 10 years, 1 month
  • Last seen more than a week ago
  • Clarksville, MD
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Colonel, USAF (Retired). Retired from L-3 Communications/Titan/Delfin Systems.

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Top posts
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12
Finding $\displaystyle \sum \limits _{n=1}^{\infty}\frac{(-1)^n (H_{2n}-H_{n})}{n(2)^n \binom{2n}{n}}$
Apr 7, 2022
7
How to explain this step of solving a limit
Jan 11, 2015
4
Does anyone know a function that can describe a harmonic series?
Mar 6, 2016
4
When does degree 4 polynomial have 4 distinct real roots?
Jun 4, 2017
3
Find all real solutions for $x$ in $2(2^x−1)x^2+(2^{x^2}−2)x=2^{x+1}−2$.
Mar 5, 2018
3
Integral Cuboid Problem
Oct 12, 2019
3
Integration of $\int_{0}^{\infty}{\frac{1}{(x^2+1)(x^{2019}+1)}dx}$
Dec 19, 2020
2
Explain how assigning n tasks to n persons randomly gives a sample space of n^n?
Jul 13, 2014
2
How many even numbers will $99$ dice show if we roll them forever under a certain condition?
Nov 1, 2014
2
When is $991n^2 +1$ a perfect square?
Feb 26, 2016
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43
Apply multiple functions to same list
24
Drawing a square root spiral
20
Region bounded by x^2+y^2=1, y=z, x=0, z=0, in first octant
19
Pseudo-currying in one line
19
How can I plot a polygon with n sides inscribed in a circle and show the area?