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Apr
9
revised Convert from base 10 to base 5
improved formatting
Apr
9
awarded  Enlightened
Apr
9
awarded  Nice Answer
Apr
8
revised Convert from base 10 to base 5
added 142 characters in body
Apr
8
answered Convert from base 10 to base 5
Apr
5
answered What is the probability that you will see an odd number of heads?
Apr
1
answered What is the legality of the following series?
Mar
31
comment $f(x)=x$ if $x$ is rational , $f(x)=1-x$ if $x$ is irrational, at what point this function is continuous?
You beat me to it, +1
Feb
26
comment Finding out the coeffcient next to $x^2$ in $(\cdots(x-2)^2-2)^2\cdots-2)^2$.
I don't know why it is, but it seems the recurrence is $a(n)=20a(n-1)-64a(n-2)$, which gives the solution $(4*16^n-4^n)/3.$
Feb
19
comment Prove that $\sum_i\sum_j a_{ij}=\sum_j\sum_i a_{ij}$
See math.stackexchange.com/questions/497096/…
Jan
9
reviewed Approve Prove that $ \frac12 < 4\sin^2\left(\frac{\pi}{14}\right) + \frac{1}{4\cos^2\left(\frac{\pi}{7}\right)} < 2 - \sqrt{2} $
Nov
29
awarded  Civic Duty
Oct
27
reviewed No Action Needed Find $a\in\mathbb{N}$ such that $n^4+a$ is not prime $\forall n\in\mathbb{N}$
Oct
23
revised How to change to same units
edited tags
Oct
23
comment Integral of product of two measurable functions
This is essentially a special case of Holder's inequality.
Oct
23
answered Intuition behind product rule of probability
Oct
22
answered Proof of Aristarchus' Inequality
Oct
22
reviewed Approve Polynomial inequality proof
Oct
22
comment Mean value of the image of an exponentiallly distributed time under a smooth curve
$f(t)$ should be $\phi(t)$ in 3.
Oct
22
reviewed Reviewed prove that quadrangle is isosceles trapezoid