I have recently learned a bit about the concept of closure under an operation, and I'm curious to know if a set can be closed only under division (wh...

Just a quick question, is it right to call the numerator and the denominator of a fraction by "terms"? I don't think that "terms" is the right word h...

From wiki: A dynamic decision problem ... Finally, we assume impatience, represented by a discount factor $0 < \beta < 1$ What the meaning of "...

Given a matrix $A$ and column vector $x$, what is the derivative of $Ax$ with respect to $x^T$ i.e. $\frac{d(Ax)}{d(x^T)}$, where $x^T$ is the transpose o...

What online graphing tools handle complex numbers well? Desmos is generally excellent by breaking functions down into their real and imaginary parts and p...

I have calculated the Pearson correlation coefficient for two sets of values using excel. I got the value in the negative number. I know that the idea of ...

Give a complete factored form of the polynomial $-6a^5+48a^4+12a$ I have tried solving this equation and I just cant figure it out. Help me, and give me t...

Synthethic division is commonly taught, but I have never actually had a proof/explanation shown to me. Why does it work? Work So Far I related the "$x$" t...

Evaluate $\displaystyle\int \sin^5{(x)}\cos^4{(x)} \ dx$ How will I go about evaluating the given integral? I have absolutely no idea where to start, sinc...

How do you prove the following trigonometric identity: $$ \sin^2\theta+\cos^2\theta=1$$ I'm curious to know of the different ways of proving this dep...