ivan
  • Member for 8 years, 11 months
  • Last seen more than a week ago
10 answers
61 votes
180k views
43 bookmarks
Proof of triangle inequality
6 answers
29 votes
38k views
21 bookmarks
A question comparing $\pi^e$ to $e^\pi$
2 answers
21 votes
27k views
7 bookmarks
Algorithm for finding the square root of a polynomial...
4 answers
17 votes
11k views
19 bookmarks
Show that the curve $x^2+y^2-3=0$ has no rational points
11 answers
16 votes
62k views
4 bookmarks
Why do we generally round 5's up instead of down?
7 answers
13 votes
532 views
1 bookmarks
Why does $\bigcup_{X \in \mathscr{P}(\mathbb{N})}X = \mathbb{N}$, instead of $\mathscr{P}(\mathbb{N})?$
1 answers
11 votes
426 views
Factoring a couple $5$th degree polynomials
2 answers
9 votes
5k views
4 bookmarks
Proof of the standard algorithm for addition?
3 answers
8 votes
14k views
1 bookmarks
Help finding inverse of $f(x)=\frac{e^x-e^{-x}}{2}$
1 answers
8 votes
203 views
2 bookmarks
Proof vs Practice
4 answers
7 votes
434 views
Graphing $x^{2/3}$: a question of domain
2 answers
7 votes
4k views
1 bookmarks
Prove $||a| - |b|| \leq |a - b|$
4 answers
6 votes
3k views
1 bookmarks
Proof: if the graphs of $y=f(x)$ and $y=f^{-1}(x)$ intersect, they do so on the line $y=x$
3 answers
5 votes
8k views
Prove: $a\equiv b\pmod{n} \implies \gcd(a,n)=\gcd(b,n)$
5 answers
5 votes
3k views
3 bookmarks
Compound interest derivation of $e$
2 answers
5 votes
9k views
1 bookmarks
Help evaluating a gamma function
5 answers
5 votes
3k views
2 bookmarks
What branches of math make frequent use of polynomial long division?
3 answers
4 votes
3k views
2 bookmarks
Is there a proof that $\mathbb{R}$ is connected?
2 answers
4 votes
243 views
1 bookmarks
How can I solve this system of non-linear equations?
1 answers
4 votes
2k views
5 bookmarks
Deriving hyperbola equation: why can we assume vertices lie in between foci?
1 answers
4 votes
590 views
1 bookmarks
Prove: $n \in \mathbb{Z} \implies 4 \nmid (n^2-3)$
3 answers
3 votes
2k views
2 bookmarks
Prove: If $n=2^k-1$, then $\binom{n}{i}$ is odd for $0\leq i\leq n$
1 answers
3 votes
309 views
1 bookmarks
Why does complement arithmetic work?
0 answers
3 votes
34 views
Do both these ellipses satisfy the same conditions?
2 answers
2 votes
6k views
1 bookmarks
How do I write $\{3,6,11,18,27,38,...\}$ in set-builder notation?
2 answers
2 votes
4k views
1 bookmarks
Interpret the graph of $\frac{ax+b}{cx+d}$ as a transformation of $y=\frac{1}{x}$
2 answers
1 votes
2k views
Use Intermediate Value Theorem to prove $\sqrt{s}$ exists, for $s>0$
2 answers
1 votes
106 views
Formulating the bitwise OR operation
1 answers
1 votes
669 views
nearest-neighbor algorithm efficiency
2 answers
1 votes
262 views
1 bookmarks
Continuous exponential growth and misleading rate terminology