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165 Answers

newest activity votes
38
Why is Pi equal to 3.14159…?
28
Is 2048 the highest power of 2 with all even digits (base ten)?
19
Bad Fraction Reduction That Actually Works
14
Does Liouville's Theorem work in real analysis?
11
$\lim\limits_{x\to\infty}f(x)$ exists but $\lim\limits_{x\to\infty}f'(x)$ does not
11
What is the simplest ellipse that goes through exactly 13 lattice points?
11
Is $x^x=y$ solvable for $x$?
10
Are $e$ and $\pi$ dependent since $f(e)=\pi$ and$ f(\pi)=e$?
10
Does “iff” mean “if and only if” $(\Longleftrightarrow)$?
10
How can I write a function that outputs the number of digits in the input?
9
how to explain that Prob[heads, tails] = 2 * Prob[heads, heads] to a student?
8
The reciprocal condition of an equality
8
A nontrivial everywhere continuous function with uncountably many roots?
8
max and min versus sup and inf
7
What does $\mathbb{Z}_{7429}$ mean?
7
pointwise convergence of Fourier series
6
Is it wrong to say $ \sqrt{x} \times \sqrt{x} =\pm x,\forall x \in \mathbb{R}$?
6
How do I solve this problem?
6
Do two injective functions prove bijection?
6
Complexity of counting the number of triangles of a graph
6
Is there a reason why the number of non-isomorphic graphs with $v=4$ is odd?
6
square squares with diagonals also squares
6
Does convergence on finite intervals imply uniform convergence?
6
Does a negative number really exist?
6
factorize $x^3-3x+2$
6
What kind of series is this, and how do I sum it?
5
The measure of the image of a set of measure zero
5
Why graph a function?
5
Create polynomial coefficients from its roots
5
Plot graph with custom axes
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