4,822 reputation
21651
bio website non-existent
location United Kingdom
age 25
visits member for 2 years, 3 months
seen Jan 25 at 21:09

Oct
17
reviewed Close $\dfrac1a+\dfrac1b=\dfrac1c$, $a, b, c \in \mathbb{N}$ with no common factor, find all solutions
Oct
17
reviewed Close Why is the reduced echelon form of a set of independent vectors, the identity matrix?
Oct
17
reviewed Close In what base does the equation $x^2 - 11x + 22 = 0$ have solutions $6$ and $3$?
Oct
17
reviewed Close Simple Combination Help!
Oct
17
reviewed Close Math homework, so much guessing work?
Oct
17
reviewed Close Stopping Time and Brownian Motion
Oct
17
reviewed Reject Implies the $\leq$ relation a lexicographical relation?
Oct
17
reviewed Approve Simplify: $\sin \frac{2\pi}{n} +\sin \frac{4\pi}{n} +\ldots +\sin \frac{2\pi(n-1)}{n}$.
Oct
16
reviewed Close Integrate $\csc(x)^3dx $
Oct
16
reviewed Close Evaluate $ \int_0^\infty \cos(x)/\cosh(x) dx $
Oct
16
awarded  Yearling
Oct
14
revised Why is the canonical filtration of a Brownian motion left-continuous?
edited title
Oct
9
reviewed Approve Is this one bounded?
Oct
9
reviewed Close How do I find $E[X_1|X_1<X_2]$ when $X_1$ and $X_2$ are independent $N(0,1)$ random variables?
Oct
9
reviewed Reopen If you have two envelopes, and …
Oct
9
reviewed Leave Open Time-optimal control - Coupled system of equations, control to the origin
Oct
9
reviewed Close Does differential equation always has solution if vector field is only continuous?
Oct
9
reviewed Leave Open Moment Generating Function of Poisson
Oct
9
reviewed Close value of $x^2 \sin (\frac1x)$ at $x=0$
Oct
9
reviewed Close Calculating the electric field of a disk