I'm learning about integration and want to learn about contour integration. Only, I'm not very familiar with it. Question: How does contour inte...

Basically, what I am asking is this: Is a matrix just like an ordered sequence, of which the elements can be anything? It would seem silly to restrict a m...

I first asked this on english.stackexchange.com, but this site would probably be a better-suited to answer it: In division, we have a dividend and a divis...

So I have plotted the the function defined implicitly by fimplicit in Matlab. I want to fill the region inside. How to do that? f1=@(x,y) (1+x+x.^2-y.^2)....

Would substitution be helpful? That's the only thing I can think of but then I'm not sure how to derive $\ln(x^2)$

I am not a number theorist and I am learning about relations. I encountered a relation that says $a \leq b$ if $a$ divides $b$ Can someone clarify what it...

An unsophisticated question from a neophyte: Given the numbers: $1,2,3,4,5$ What is the symbol for the range of the numbers? i.e. the lowest-highest numbe...

When using vector notation in coordinate systems (Cartesian coordinates) we see that the magnitude of a vector in two dimensions is equal to the square ro...

How to find all the combinations that adds up to a certain number, given the number of elements? For example if target $T$ is $ 100 $ and number of elemen...

Let $A$, $B$, and $C$ be sets where $A=\{1,2\}$, $B=\{0,1\}$, and $C=\{0,4\}$. What would be the Cartesian product of these $3$ sets for $A\times B\times ...