A level: (noun) a qualification in a specific subject typically taken by school students in the UK aged 16–18, at a level above GCSE. The equivalent in Scotland is the Higher.
As of July $2021$, I am no longer an ALevel Student, which is a little sad. It is with greater regret that I will only be very slightly active on MSE for the next year (approximately), starting from August $2021$.
Thank you all for teaching me so many things, and I hope that I've helped some of you with my posts. Good luck and goodbye, until July $2022$.
List of useful integration techniques that aren't beyond high school level:
Some of my best/most interesting answers on this site:
 Proving $\sum_{k=\infty}^{\infty}\frac{1}{64k^4+1}=\frac{\pi}{4}\frac{1+\mathrm{sinh}(\pi/2)}{\mathrm{cosh}(\pi/2)}$ without using residues or contour integrals
 Solving $3x^4+6x^3+x^2+6x+3=0$ exactly.
 Finding sum of the roots of $(\sin x+\cos x)^{(1+\sin 2x)}=2$
 How to calculate this trigonometric sum
 Prove this formula $\frac{1r\cos(x)}{12r\cos(x)+r^2}= 1+\sum_{n=1}^{+\infty}r^{n}\cos\left(nx\right)$
 Evaluate $\sum\limits_{r=1}^\infty(1)^{r+1}\frac{\cos(2r1)x}{2r1}$
 Solving $2^x+2^{x}=2\cos\frac{x}{5}$
 Finding real $(x,y)$ solutions that satisfies a system of equation.
If you specifically want my help, then please email mathshelper4you@gmail.com
with your problem. No guarantees though. :)

YearlingOct 16

SupporterJan 31

AutobiographerDec 29 '20
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