Skip to main content
Mathematics
Red Five's user avatar
Red Five's user avatar
Red Five's user avatar
Red Five
  • Member for 5 months
  • Last seen this week
  • Melbourne, Australia
Profile Activity
Stats
2,772
reputation
10k
reached
96
answers
23
questions
Communities
View all
About

High school Mathematics teacher with an interest in historical (pre 1915) school Mathematics exams/University entrance exams as they seem to be full of rich ideas that are simply not taught anymore in schools.

Which is a great loss.

Badges
View all badges
4
gold badges
11
silver badges
27
bronze badges
Top tags
View all tags
39
Score
14
Posts
12
Posts %
27
Score
16
Posts
13
Posts %
14
Score
6
Posts
5
Posts %
13
Score
10
Posts
8
Posts %
10
Score
9
Posts
8
Posts %
8
Score
6
Posts
5
Posts %
Top posts
View all questions and answers
25
Minimum of $\frac{x^3}{x-6}$ for $x>6$ without using derivative?
Apr 20
18
Union of two events is at least as likely as the product of the events' probabilities
Mar 31
8
Solving $p\sin^{4}{\theta}-q\sin^{4}{\phi}=p$ and $p\cos^{4}{\theta}-q\cos^{4}{\phi}=q$ for $\theta$ and $\phi$
Mar 4
8
Finding a more efficient solution to a trigonometric identity problem.
Apr 28
6
Eliminating $\theta$ from $x^2+y^2=\frac{x\cos3\theta+y\sin3\theta}{\cos^3\theta}$ and $x^2+y^2=\frac{y\cos3\theta-x\sin3\theta}{\cos^3\theta}$
Feb 20
6
Can a connected planar graph have 10 vertices and edges? is this possible?
Apr 22
5
Error with Cauchy Integral Formula
Apr 19
4
A crew needs to divide oranges
May 23
4
Improving my way of showing $\sin^212^\circ+\sin^221^\circ+\sin^239^\circ+\sin^248^\circ=1+\sin^29^\circ+\sin^218^\circ$
Mar 25
4
Two runners start on a track and run at different speeds. When will they next meet?
May 15