# How to Enter Math in the Quizzes

## Basic Operations

OperationCommand
addition $(a+b)$a+b
subtraction $(a-b)$a-b
multiplication $(a \cdot b)$a*b
division $\left(\dfrac{a}{b}\right)$a/b
exponentiation $(a^{b})$a^b

## Constants & Symbols

Constant/SymbolCommand
$\pi$Pi
$\text{e}$exp(1)
$\text{i}$I
$\infty$infinity

## Functions

FunctionCommand
trigonometric $\left(\sin(x), \cos(x), \tan(x), \csc(x), \sec(x), \cot(x)\right)$sin(x), cos(x), tan(x), csc(x), sec(x), cot(x)
inverse trig $\big(\sin^{-1}(x)$ or $\arcsin(x)$, $\cos^{-1}(x)$ or $\arccos(x)$, $\tan^{-1}(x)$ or $\arctan(x)\big)$arcsin(x), arccos(x), arctan(x)
exponential $\left(e^{x}\right)$exp(x)
logarithmic $\left(\ln(x), \log_{a}(x)\right)$ln(x), ln(x)/ln(a)
square root $\left(\sqrt{x}\right)$sqrt(x)
$\text{n}^{th}$ root $\left(\sqrt[n]{x}\right)$surd(x,n)
absolute value $\left(\lvert x \rvert\right)$abs(x)
factorial $\left(n!\right)$factorial(n)

## Vectors & Matrices

FunctionCommand
horizontal vector $\begin{bmatrix}a & b & c\end{bmatrix}$<a|b|c>
vertical vector $\begin{bmatrix}a\\ b\\ c\end{bmatrix}$<a,b,c>
matrix $\begin{bmatrix}a & b & c\\ d & e & f\\ g & h & i\end{bmatrix}$<<a|b|c>, <d|e|f>, <g|h|i>>
OR
<<a,d,g> | <b,e,h> | <c,f,i>>

Always check your answers using the preview hyperlink before submitting them. This can be found near the entry box of any formula questions.

Be sure to read each question carefully and make sure that you understand how to enter your answer.