1. Definitions
For any real numbers $a$, $b$, $c$ and $d$. Let $z=a+bi$, whe… Read
For any real numbers $a$, $b$, $c$ and $d$. Let $z=a+bi$, whe… Read
Let $E$ and $F$ be two events.
\begin{equation*}
P(E\mbox{ … Read
Condition:
Let $T(1)$, $T(2)$, …, $T(n)$ be an arithmetic seque… Read
Property: The three medians intersec
For a circular cylinder with base radius $r$ and height $h$.… Read
For $n$ different objects, if we select $r$ objects out of th… Read
Let $E$ and $F$ be two events. If $E$ and $F$ are complementar… Read