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visits member for 2 years, 6 months
seen Jul 17 at 12:51

Jun
10
revised “It looks straightforward, but actually it isn't”
Too big a shortcut...
Jun
10
revised “It looks straightforward, but actually it isn't”
Typo
Jun
9
revised “It looks straightforward, but actually it isn't”
On the OP's suggestion, added a possible elementary proof
May
13
awarded  Caucus
Nov
18
answered Prove that R is a ring under 'special' definitions of multiplication and addition
Oct
18
comment How to show that $\frac{\sin(n)}{n}$ is $1$ as $n \rightarrow 0$?
As an alternative, you can consider that limit as a derivative.
Sep
30
revised Construct (with ruler and compass) a square given one point from each side.
added 3 characters in body
Sep
30
awarded  Teacher
Sep
29
awarded  Supporter
Sep
29
awarded  Editor
Sep
29
revised Construct (with ruler and compass) a square given one point from each side.
added 6 characters in body
Sep
29
answered Construct (with ruler and compass) a square given one point from each side.
Sep
29
comment Construct (with ruler and compass) a square given one point from each side.
I'm not sure to understand the question... Do you want a proof that this solution works?