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Oct
2
awarded  Yearling
Oct
2
awarded  Yearling
Oct
30
comment How to quickly judge a function is injection?
You might first consider which of these are guaranteed to map into $[0,1]$.
Oct
2
awarded  Yearling
Aug
7
revised Prove $\cos^2x\sin^4x = \frac{1}{32}(2-\cos(2x)-2\cos(4x)+\cos(6x))$
Improved formatting
Aug
7
suggested approved edit on Prove $\cos^2x\sin^4x = \frac{1}{32}(2-\cos(2x)-2\cos(4x)+\cos(6x))$
Aug
7
revised Prove $\cos^2x\sin^4x = \frac{1}{32}(2-\cos(2x)-2\cos(4x)+\cos(6x))$
Added Latex formatting
Aug
7
suggested approved edit on Prove $\cos^2x\sin^4x = \frac{1}{32}(2-\cos(2x)-2\cos(4x)+\cos(6x))$
Aug
6
comment easy “show this is a subset” question
Then you have shown that $(a,c+1)$ is an element of $A$ since it satisfies the required condition. That's all you need to show $B$ is a subset.
Aug
6
answered easy “show this is a subset” question
Jul
29
revised Prove $\frac{1-\tan(x/2)}{1+\tan(x/2)}=\frac{1-\sin x}{\cos x}$
Added Latex formatting
Jul
29
suggested approved edit on Prove $\frac{1-\tan(x/2)}{1+\tan(x/2)}=\frac{1-\sin x}{\cos x}$
Jul
28
comment How to handle big powers on big numbers e.g. $n^{915937897123891}$
By the way, your original code computes $n^{2^{915937897123891}}$.
Jul
28
answered Solving this pie-chart
Jul
26
revised How do you solve this radical equation $\sqrt{2x+5} + 2\sqrt{x+6} = 5$?
Fixed sqrt formatting
Jul
26
suggested approved edit on How do you solve this radical equation $\sqrt{2x+5} + 2\sqrt{x+6} = 5$?
Jul
26
revised How to simplify an expression like this: $(x^2+x^{-2}-2)^{1/2}$
Added Latex formatting
Jul
26
suggested approved edit on How to simplify an expression like this: $(x^2+x^{-2}-2)^{1/2}$
Jul
14
revised more than one minimum value?
Improved formatting
Jul
14
suggested approved edit on more than one minimum value?