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Oct
17
reviewed Close In what base does the equation $x^2 - 11x + 22 = 0$ have solutions $6$ and $3$?
Oct
17
reviewed Close Simplifying a fraction with binomial coefficients
Oct
17
reviewed Close Math homework, so much guessing work?
Oct
17
reviewed Close Stopping Time and Brownian Motion
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
Oct
9
reviewed Close Rational number arbitrarily close to a square root of 2
Oct
6
reviewed Close Find all solutions of $a^b = b^a$
Oct
6
reviewed Leave Open For a continuous linear functional, is it true that $(Lx)z=(Lz)x $?