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alex.jordan
Portland, OR
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Top Questions
95
votes
What's the largest possible volume of a taco, and how do I make one that big?
differential-geometry
multivariable-calculus
optimization
recreational-mathematics
calculus-of-variations
asked Dec 16 '11 at 5:18
math.stackexchange.com
87
votes
Regular way to fill a $1\times1$ square with $\frac{1}{n}\times\frac{1}{n+1}$ rectangles?
sequences-and-series
visualization
egyptian-fractions
asked Feb 24 '15 at 23:08
math.stackexchange.com
69
votes
Fractal behavior along the boundary of convergence?
complex-analysis
power-series
plane-curves
fractals
asked Nov 23 '11 at 0:22
math.stackexchange.com
57
votes
Geometric interpretation for sum of fourth powers
summation
proof-without-words
asked Nov 21 '12 at 4:10
math.stackexchange.com
43
votes
How to respond to “solve this equation” in a basic algebra class
algebra
textbooks
asked Apr 7 '17 at 16:17
matheducators.stackexchange.com
36
votes
How to respond to “solve this equation” in a basic algebra class
algebra-precalculus
education
asked Jul 16 '13 at 3:01
math.stackexchange.com
32
votes
Is there an easy way to add hover text to all incidents of math mode where the hover text would contain the LaTeX code?
math-mode
teaching
accessibility
asked Oct 22 '11 at 3:05
tex.stackexchange.com
31
votes
Examples of Taylor series with interesting convergence along the boundary of convergence?
calculus
complex-analysis
convergence
asked Nov 17 '11 at 0:33
math.stackexchange.com
23
votes
Are there always singularities at the edge of a disk of convergence?
calculus
sequences-and-series
complex-analysis
convergence
taylor-expansion
asked Jun 24 '11 at 6:06
math.stackexchange.com
23
votes
Do we know anything about what a clock face would look like in Middle Earth?
tolkien
middle-earth
asked Jul 14 '15 at 2:43
scifi.stackexchange.com
1
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Top Answers
170
Alternative notation for exponents, logs and roots?
math.stackexchange.com
77
Find five consecutive odd integers such that their sum is $55$.
math.stackexchange.com
60
Find a real function $f:\mathbb{R}\to\mathbb{R}$ such that $f(f(x)) = -x$?
math.stackexchange.com
55
An infinitely powered expression
math.stackexchange.com
52
Can you give an example of a complex math problem that is easy to solve?
math.stackexchange.com
48
Proof the Fibonacci numbers are not a polynomial.
math.stackexchange.com
47
Funny identities
math.stackexchange.com
42
Can a function have two derivatives?
math.stackexchange.com
40
Simulate repeated rolls of a 7-sided die with a 6-sided die
math.stackexchange.com
39
Nice examples of groups which are not obviously groups
math.stackexchange.com
38
How to understand why $x^0 = 1$, where $x$ is any real number?
math.stackexchange.com
35
Nice examples of groups which are not obviously groups
math.stackexchange.com
27
Prove that 17 divides 1111111111111111 (16 1's) and doesn't divide 11111111
math.stackexchange.com
26
Any neat way to calculate this Vandermonde-like determinant?
math.stackexchange.com
20
Two paradoxes: $\pi = 2$ and $\sqrt 2 = 2$
math.stackexchange.com
20
How can I unfactorilize number?
math.stackexchange.com
19
How to show that $\det(AB) =\det(A) \det(B)$?
math.stackexchange.com
19
What is a mathematical expression for the sequence $\{1,1,-1,-1,1,1,-1,-1,\dots\}$?
math.stackexchange.com
19
Once and for all - “Rational numbers” - because of ratio, or because they make sense?
math.stackexchange.com
19
Continuous $f$ with $f(0)=1$ and $\int_0^1 f(x) dx = \int_0^1 xf(x) dx = \int_0^1 x^2f(x) dx = 0$?
math.stackexchange.com
18
Why is a circle 1-dimensional?
math.stackexchange.com
18
Can a nonzero polynomial evaluate to the zero function in a suitable infinite ring of char 0?
math.stackexchange.com
18
Why can't you add apples and oranges, but you can multiply and divide them?
math.stackexchange.com
17
Is it faster to count to the infinite going one by one or two by two?
math.stackexchange.com
16
How do I know if my beer is safe to drink?
homebrew.stackexchange.com
16
A hammer and a nail cost $1.10, and the hammer costs one dollar more than the nail. How much does the nail cost?
math.stackexchange.com
16
Prove the inequality $\,\frac{1}{\sqrt{1}+ \sqrt{3}} +\frac{1}{\sqrt{5}+ \sqrt{7} }+\ldots+\frac{1}{\sqrt{9997}+\sqrt{9999}}\gt 24$
math.stackexchange.com
16
Does a non-trivial solution exist for $f'(x)=f(f(x))$?
math.stackexchange.com
16
The general term of the sequence : 1, 1, -1, -1, 1, 1, …?
math.stackexchange.com
15
integrate square of $\arctan x$. Tricky
math.stackexchange.com
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