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Mathematics
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Bob Shannon
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calculus

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66 Questions

Views Newest Activity Votes
1
10
votes
3
answers
597
views

Calculate $\frac13+\frac29+\frac{1}{27}+\frac{2}{81}+\frac{1}{243}+\frac{2}{729}+\ldots$

sequences-and-series
Apr 5 '13 at 0:08 André Nicolas 463k
 
6
votes
3
answers
748
views

What does $ d\tan(x) = \sec^2(x)\,dx $ mean?

calculus integration
Aug 18 '17 at 18:40 Michael Hardy 227k
2
6
votes
4
answers
5k
views

Finding a non constant solution to $ (x')^2+x^2=9 $

calculus ordinary-differential-equations
Sep 18 '13 at 12:10 user64494 4,890
 
6
votes
4
answers
166
views

Integrating $x/(x-2)$ from $0$ to $5$

calculus integration improper-integrals
Mar 23 '13 at 0:07 robjohn♦ 284k
1
5
votes
2
answers
2k
views

Showing one set is a subset of another

elementary-set-theory logic discrete-mathematics
Dec 14 '13 at 15:21 Namaste 1
 
5
votes
3
answers
202
views

Evaluating $ \int \frac{\sqrt{1+x}}{x} $

integration
Apr 22 '13 at 17:32 Community♦ 1
 
4
votes
9
answers
20k
views

Prove that if n is a perfect square, then n+2 is not a perfect square

discrete-mathematics
Jul 29 at 7:46 mlchristians 2,297
2
3
votes
1
answer
3k
views

Surface integral of vector field over a unit ball

calculus
May 8 '14 at 6:38 Bob Shannon 1,403
 
3
votes
2
answers
139
views

Differential Equation and Bernoulli

calculus ordinary-differential-equations differential
Mar 16 '14 at 0:43 Community♦ 1
1
3
votes
2
answers
916
views

Set logic to propositional logic

elementary-set-theory propositional-calculus
Nov 17 '13 at 20:02 Julien Clancy 3,962
 
3
votes
1
answer
64
views

McLaurin Series Representation of $ f(x)=10^x $

calculus
May 7 '13 at 3:59 Alex Wertheim 16.9k
 
3
votes
3
answers
5k
views

Evaluating the limit of $\ln(2x)/\ln(x)$ as $x\to\infty$

calculus
Apr 3 '13 at 1:47 George V. Williams 4,819
 
2
votes
2
answers
6k
views

Determining if a Telescoping Series is convergent or not

calculus sequences-and-series
May 20 at 9:37 user228362 5
 
2
votes
1
answer
73
views

Proving that everything in a language can be generated by a grammar

formal-languages context-free-grammar
Mar 31 '16 at 22:51 dtldarek 33.9k
 
2
votes
1
answer
1k
views

Fourier Transform of x(-2t+4)

fourier-analysis
May 6 '14 at 7:47 Mamal 374
3
2
votes
8
answers
930
views

Proving for every odd number $x$, $x^2$ is always congruent to $1$ or $9$ modulo $24$

discrete-mathematics
May 3 '14 at 12:48 Community♦ 1
 
2
votes
1
answer
78
views

Solving a second order homogenous ODE with double roots

ordinary-differential-equations
Oct 6 '13 at 17:19 Amzoti 52.7k
 
2
votes
1
answer
42
views

Solving a second order homogenous ODE with non-real complex roots

calculus ordinary-differential-equations
Oct 5 '13 at 22:02 Mhenni Benghorbal 44.1k
 
1
vote
1
answer
7k
views

Solving a integro-differential equation

laplace-transform integro-differential-equations
Sep 24 '18 at 16:16 Adrian Keister 8,191
 
1
vote
1
answer
64
views

Partial Fraction Decomposition in $ \frac{s^3-1}{(s^2+6)^2(s+12)^2} $.

partial-fractions
Aug 7 '18 at 6:56 Nosrati 28.5k
 
1
vote
3
answers
1k
views

Does a purely imaginary number have a corresponding “angle” in polar coordinate system?

complex-numbers
Apr 24 '18 at 18:43 David K 62.8k
 
1
vote
1
answer
889
views

Calculating expected value of a pareto distribution

probability integration probability-distributions
Apr 8 '15 at 0:38 Chappers 60.2k
 
1
vote
2
answers
62
views

Number of ways to group digits in {1,2,3,4,5,6,7,8,9} into numbers, while maintaining order

combinatorics permutations
Oct 14 '14 at 6:15 Marc van Leeuwen 93.6k
 
1
vote
1
answer
227
views

Proving an asymptotic run time is faster than another using L’Hôpital’s

calculus limits algorithms asymptotics
Jul 16 '14 at 17:25 Community♦ 1
 
1
vote
2
answers
7k
views

Union and Intersection of Collection of Sets

discrete-mathematics
Jun 10 '14 at 12:29 Community♦ 1
 
1
vote
0
answers
2k
views

Using the Modulation property of the Fourier Transform

fourier-analysis transformation
May 8 '14 at 22:42 Bob Shannon 1,403
2
1
vote
1
answer
3k
views

Evaluating the surface integral where S is part of a plane and inside a cylinder

calculus
May 8 '14 at 4:28 David H 24k
 
1
vote
3
answers
2k
views

Proving n is a multiple of 3 if and only if 2n is a multiple of 3

discrete-mathematics
Dec 11 '13 at 18:12 Magdiragdag 11.3k
 
1
vote
4
answers
87
views

Finding the recurrence relation of a known series $\frac{1}{2}+\frac{1}{24}+\frac{1}{720}+…$

sequences-and-series
Dec 8 '13 at 13:04 R. J. Mathar 11
 
1
vote
1
answer
453
views

Laplace transform of two functions

laplace-transform
Nov 24 '13 at 23:35 Mhenni Benghorbal 44.1k
1 2 3 next
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