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zcahfg2
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10
Find the value of $\sum_{n =1}^\infty \frac 1 {5^{n+1}-5^n+1}$
Feb 2, 2016
question
5
$a^2b + abc + a^2c + ac^2 + b^2a + b^2c + abc +bc^2$ factorisation
Apr 17, 2015
question
4
Find the shortest distance between the point and a parabola
Jun 7, 2015
question
3
Working out $\tan x$ using sin and cos expansion
Apr 17, 2015
question
3
$y=\cos(m \arcsin x)$ Validity of solution $\dfrac {dy} {dx}$ when $x=0$?
Apr 21, 2015
question
3
Show $\int \dfrac{\sinh x}{\cosh 2x}=\dfrac 1 {2\sqrt 2} \ln\left|\dfrac {\sqrt 2 \cosh x-1}{\sqrt 2 \cosh x +1}\right| + C$
Jun 6, 2015
question
3
value of $\arctan (\cosh u)$ as $u \to -\infty $
Jun 7, 2015
question
3
Solving $2\sin(\theta + 17) = \frac {\cos (\theta +8)}{\cos (\theta + 17)}$
Jun 23, 2015
question
2
Counts and skips the numbers that have digits divisible by 3 (change in base method)
Feb 22, 2015
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2
A line through the point P(8, -7) is a tangent to the circle C at the point T. Find the length of PT.
May 19, 2015
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Interview Question: Query - which sentences contain all of the words of a phrase
8
Why is anaconda taking too much space (>30GB)?
7
(Azure) az batch pool : error: 'NoneType' object has no attribute 'startswith'
7
Building a wooden arcade stick case
6
Merge commit with IntelliJ IDEA