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comment How to calculate $\int \frac{\sin x}{\tan x+\cos x} \, dx$
I'd probably try splitting it into partial fractions
Jun
28
answered Question about logarithmic eqations
Jun
28
revised Question about logarithmic eqations
fixed formatting
Jun
28
comment Question about logarithmic eqations
It doesn't have a solution in terms of elementary functions, you need to use the Lambert W function
Jun
28
suggested approved edit on Question about logarithmic eqations
Jun
23
comment Why does $\cos(x) + \cos(y) - \cos(x + y) = 0$ look like an ellipse?
Completely unrelated, but that is one of the coolest graphs I've ever seen
Jun
23
accepted Roots of a sixth degree polynomial
Jun
23
asked Roots of a sixth degree polynomial
Jun
22
accepted Integrating $\frac{1}{1+e^x}$
Jun
22
comment Integrating $\frac{1}{1+e^x}$
Thanks for the answer, I can see the solution now. However I would appreciate it if you could explain why my working doesn't work. I can't see the mathematical issue with it
Jun
22
asked Integrating $\frac{1}{1+e^x}$
Jun
14
answered integrating help, using a u substitution of differential equation
Jun
13
comment Vector proof with two right angled triangles
@RoryDaulton I think so. When I attempted the question I drew a diagram and the way I drew it resulted in a rectangle with diagonal $AB$, so I think the right angles are at $P$ and $Q$
Jun
13
revised Vector proof with two right angled triangles
deleted 4 characters in body
Jun
13
asked Vector proof with two right angled triangles
Jun
8
suggested rejected edit on Prove that there are no positive integers $a$ and $b$, such that $b^4 + b + 1 = a^4$
Jun
8
comment Prove that $\sum_{n=1}^{\infty} (-1)^n\frac{n}{n+1}$ diverges
Remember that even if the limit is 0 it doesn't necessarily mean the series converges. Think of $\sum_{n=1}^\infty \frac{1}{n}$
May
30
revised Integration $e^{-x^2}$
fixed formatting
May
30
suggested approved edit on Integration $e^{-x^2}$
May
30
accepted Question on Spearman's Rank Correlation Coefficient