ghshtalt

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Apr
18
 awarded  Nice Question
Mar
10
 revised Proving $(2n+1) + (2n+3) + \cdots + (4n-1) = 3n^{2}$ for all positive integers $n$
removed ">" from formatted text block
Mar
9
 awarded  Nice Question
Mar
3
 awarded  Popular Question
Mar
1
 awarded  Popular Question
Jan
8
 awarded  Popular Question
Nov
19
 awarded  Yearling
Nov
1
 awarded  Popular Question
Oct
26
 awarded  Popular Question
Jun
8
 awarded  Constituent
Jun
8
 awarded  Caucus
Nov
19
 awarded  Yearling
Sep
23
 accepted Why exactly can you take the absolute value of one side of this inequality and assume it is still true?
Sep
22
 asked Why exactly can you take the absolute value of one side of this inequality and assume it is still true?
Sep
20
 accepted Why is it that $\left|b_n - b \right| < \frac{\left|b \right|}{2} \Rightarrow \left| b_n \right| > \frac{\left|b \right|}{2}$?
Sep
20
 comment Why is it that $\left|b_n - b \right| < \frac{\left|b \right|}{2} \Rightarrow \left| b_n \right| > \frac{\left|b \right|}{2}$?
Thanks to all of you for your help! Part of what I overlooked is that $|b_n - b| = |b - b_n|$... I think I was trying to do this, but I kept getting $\frac{3|b|}{2}$ or something... Anyway, I think it makes sense to me finally :)
Sep
20
 asked Why is it that $\left|b_n - b \right| < \frac{\left|b \right|}{2} \Rightarrow \left| b_n \right| > \frac{\left|b \right|}{2}$?
Sep
7
 accepted What is the explanation for the elements of this set?
Sep
7
 revised What is the explanation for the elements of this set?
edited body
Sep
7
 comment What is the explanation for the elements of this set?
by the way I hope that $f(A)$ is the correct notation for the range of the function.
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