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seen Apr 12 at 21:05

Mar
19
asked How can I show that $u=e^{\sigma\sqrt{\Delta t}}$ in the binomial option pricing model
Dec
19
asked Please show $|\sin(n+1)x| = |\sin(nx+x)|$
Oct
21
asked What's the derivative $\frac{dE[F]}{dF_i}$ of this function $E[F] = |\frac{dF}{dx}|^2$?
Jun
12
asked Evaluate the limit: $\lim_{(x,y,z)\to(0,0,0)}\frac{xy+yz^2+xz^2}{x^2+y^2+z^4}$
Jun
11
asked Why does direct substitution work for limits?
Jun
10
asked Limit of two variables, proposed solution check
Jun
10
asked How to evaluate $ \lim_{(x,y)\to(0,0)}\frac{y^2\sin^2x}{x^4+y^4} $
May
26
asked What is the Jacobian and what is its importance relative to the constant for the multivariate distribution?
May
26
asked Find cumulative, marginal densities, moments for $f(x)=2,\le y \le x \le 1$ (multivariate)
May
25
asked When deriving the multivariate normal distribution, please explain this limit
May
22
asked Why is the PDF of this multivariate student t model $f(l)=Cl^{m-1}e^{-l^2/2}$
May
21
asked What is the proper way to compare discrete set of data to a continuous probability distribution?
May
21
asked How would one rescale the variance and standard deviation of a set of data?
May
15
asked Is it possible to determine if this matrix is ill-conditioned?
May
14
asked Sign restriction on the Lagrange multiplier? Why?
May
14
asked Does a quadratic necessarily have a root in this interval?
Mar
9
asked Proof involving matrix inverse of: $\|A^{-1}\|_\infty \ge \frac{\|U^{-1}\|_\infty}{n}$