So from my understanding of Rank, that its the row space of of a Matrix, count how many rows there are, that are not the same if you multiply them by a co...

I'm trying to solve e^(i*pi) on a Casio fx-991CE X calculator. The calculator is in Complex mode (MENU>2:Complex). I Input e^(i*pi) and press &quo...

The problem is: Find the general equation of a circumference with center at $(-4,3)$ and tanget to the $y$ axis I know that calculating the distance betwe...

I'm looking at this blog to try to understand the Wilson Score interval. I understand it somewhat, but I'm confused by the part under the title ...

I've been trying to solve this riddle: Say I'm thinking of a number between 1 and 100. You can ask me 10 distinct yes/no questions to guess the ...

I want to prove $a^4 + 2a^3 + 3a^2 + 2a + 1$ always be perfect square for $a \in \mathbb{N}$. Using GeoGebra I found $a^4 + 2a^3 + 3a ² + 2a + 1 = (a^2 + ...

If I differentiate $x\sin(y)$ with respect to $x$ normally then what happens to the $\sin(y)$? In partial differentiation it's taken as constant thus...

Let $f:\mathbb{C}\rightarrow\mathbb{C}$ be an entire function. And assume that at each point, one of it's derivatives vanishes. What can you say abou...

Consider two vectors $V_1$ and $V_2$ in $\mathbb{R}^3$. When we take their dot product we get a real number. How is that number related to the vectors? Is...

What is the probablity that the sum of two dice is 4 or 6? The explanation I found is as follows: Total number of outcomes $6 \times6 = 36$ Number of outc...