fleablood

# 76,157 Reputation

70 today
 +25 1 hour ago 2 events Is there a difference infinite sequences and functions? +25 3 hours ago 2 events Proof Verification: Spivak's Calculus, Chapter 1, Problem 8 +10 2 hours ago upvote How to prove that a function $f:X\to X$ is injective if and only if surjective? +10 8 hours ago upvote For real part of $z$ and $w >0$, prove $\left|\frac{z - w}{\bar z + w}\right|< 1$?
125 yesterday
 +40 08:46 4 events How to find the consecutive odd numbers that sum to a given odd number +25 04:19 2 events Find the circumference +20 12:20 2 events Does probability have a memory? +10 23:24 upvote Why does subtracting 1 from $-x$ in $y= \sqrt{-x}$, getting $y = \sqrt {-x -1 }$, result in a LEFT horizontal shift? +10 21:04 upvote Prove that every group of order $4$ is abelian +10 00:45 upvote Is every prime contained in the set $\,\{n\in\mathbb{N}:n|10^k-1\}\cup\{2,5\}\,$ for $k=1,2,3,…$? +10 00:44 upvote What's the difference between arccos(x) and sec(x)?
110 2 days ago
 +35 07:37 3 events Is a rational to the power of itself irrational? +20 22:25 2 events Find the circumference +20 12:43 2 events Probability of getting a boy (explanation of answer given in textbook) +15 21:04 accept Unclear ideas in the proof of the Archimedean Principle +10 23:46 upvote Is every prime contained in the set $\,\{n\in\mathbb{N}:n|10^k-1\}\cup\{2,5\}\,$ for $k=1,2,3,…$? +10 02:51 upvote Is there an elegant bijective proof of $\binom{15}{5}=\binom{14}{6}$?
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