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Apr
16
reviewed Leave Closed Is $ (A × B) ∪ (C × D) = (A ∪ C) × (B ∪ D)$ true for all sets $A, B, C$ and $D$?
Apr
16
reviewed Close Is this matrix equation solved right?
Apr
16
reviewed Close Solving equations with hyperbolics $\sinh^2(x)+\cosh(x)=11$
Apr
16
reviewed Leave Open Proof that any unit-speed-reparametrization of a curve preserves orientation and is an inverse of an arc length function based at some $t_0$.
Apr
16
reviewed Close Acceleration vector at highest point of accelerated projectile
Apr
16
reviewed Close Defining a stochastic process indexed by angle
Apr
16
reviewed Leave Open Product of two infinite sequences
Apr
16
reviewed Close How to solve $1 = \sum_{p \text{ prime}} x^{-p-1}$?
Apr
16
reviewed Leave Open Find the marginal densities of X and Y?
Apr
16
reviewed Leave Open Estimating a sum
Apr
16
reviewed Close Find the correlation between $U$ and $V$?
Apr
16
reviewed Leave Open Cryptography Combinatorics question
Apr
16
reviewed Leave Open Prove $(n,m)R(r,s) \equiv (n>r) \text{ or } (n=r \text{ and } m\geq s)$ is an order relation.
Apr
16
reviewed Leave Open How to write the “otherwise” condition
Apr
16
reviewed Leave Open What is the slow manifolds? and how to calculate?
Apr
16
reviewed Close Why is the joint density function of X and Y 1/L^2?
Apr
16
reviewed Close What is the derivative of max and min functions?
Apr
16
reviewed Close Let X and Y be jointly continuous random variables, and let $A$ be an arbitrary subset of $\mathbb{R^2}$.
Apr
16
reviewed Close Possible Permutations of Words
Apr
16
reviewed Close Difference : subsequences and substrings