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5h
revised How can I prove that $2ab \leq a^2 + b^2$?
Linear-Algebra is not an appropriate tag for this question. So I removd it.
5h
suggested approved edit on How can I prove that $2ab \leq a^2 + b^2$?
Apr
20
awarded  Informed
Apr
20
comment Find the values of $\sin 69^{\circ},\sin 18^{\circ} , \tan 23^{\circ}$
Additional link for sin 1. This is also a useful document Exact Values of the Sine and Cosine Functions in In crements of 3 degrees.
Apr
20
revised Find the values of $\sin 69^{\circ},\sin 18^{\circ} , \tan 23^{\circ}$
Edited for sqrt
Apr
20
revised Find the values of $\sin 69^{\circ},\sin 18^{\circ} , \tan 23^{\circ}$
Edited for sqrt
Apr
20
answered Find the values of $\sin 69^{\circ},\sin 18^{\circ} , \tan 23^{\circ}$
Apr
7
awarded  Organizer
Apr
7
revised A 10 digit positive number and ordered triplets
I have changed the Tag from Liner Algebra to elementary-number-theory
Apr
7
suggested approved edit on A 10 digit positive number and ordered triplets
Mar
18
revised IMO programs of different nations?
I rewrote to added clarity. I have used points clairified in the comments. Also a spelling correction.
Mar
18
suggested approved edit on IMO programs of different nations?
Mar
17
answered Calculate difference in days to reference date
Mar
9
revised Why does the least common denominator work?
Just added a clarification for my earlier answer.
Mar
9
revised How to represent sign function in range $[-1, 1]$
Put a ",' between -1 & 1
Mar
9
suggested approved edit on How to represent sign function in range $[-1, 1]$
Mar
9
answered Why does the least common denominator work?
Jan
30
revised How can a beginner researcher or Ph.D. student efficiently and effectively learn new concepts while staying motivated?
Replaced the word 'type consuming' by 'time consuming'
Jan
30
suggested approved edit on How can a beginner researcher or Ph.D. student efficiently and effectively learn new concepts while staying motivated?
Sep
24
awarded  Autobiographer