Barron's SAT Math 2 and SparkNotes state that if p/q is a rational zero of P(x) with integral coefficients, then p is a factor of the constant term o...

First I had the simple notion that the trignometric ratios are ratios of sides of a triangle. But when $\sin(0) = 0 , \cos(0) = 1 $ what do they mean? I h...

I'm not sure how to ask but I hope you will understand. Let's say we have such root: $$m\sqrt[2] n$$ or $$2\sqrt[2]3$$ So could you please tell ...

I have the following problem: The random vector $X$ is normally distributed with $X \sim \mathcal{N}(\mu,\Omega)$. $\mu $ is a column vector with $(\mu_1,...

When writing out the final answer in $\ln$ form, why is it necessary to put absolute brackets? How does it affect the answer? I have this answer of $-3\ln...

This might sound too general, but I have a problem understanding what is an empirical distribution supposed to mean. If I take its formal definition: $P_n...

This is a question that I am purely interested in because I think we never thought about this before in Mathematics education... or even so was not discus...

Prove that the dual of an isosceles trapezoid is a rhombus. Here, the "dual" of any polygon is where its sides intersects the midpoint of each side of the...

I am interested in knowing how often (in terms of percentage) you would expect the total of 3 fair rolled dice to exceed the total of 2 fair rolled dice. ...

sorry for the really basic question. i am looking at this old SAT question. what i am thinking is to plug in the coordinates of x and y into the equation ...