3.3. Brackets, Tables and Arrays

3.3.1. Brackets

Code

Meaning

 
$(x+1)$

Brackets

 
$3[2+(x+1)]$

Square brackets and normal brackets

 
$\{a,b,c\}$

Curly brackets - curly bracket is reserved in Latex

 
$\% 50$

Dollar sign - dollar sign is reserved in Latex

 
$3\left(\frac{2}{5}\right)$

Expanded brackets

 
$3\left[\frac{2}{5}\right]$

Expanded square brackets

 
$3\left\{\frac{2}{5}\right\}$

Expanded curly brackets

 
$\left|\frac{2}{5}\right|$

Absolute value

 
$\left.\frac{2}{5}\right|$

No left bracket

 
$\left.\frac{dy}{dx}\right|_{x=1}$

Value of a derivative at x=1

3.3.2. Tables

Code

Meaning

 
\begin{tabular}{|c|c|c|c|c|c|}
\hline
$x$ & 1 & 2 & 3 & 4 & 5 \\ \hline
$f(x)$ & 10 & 11 & 12 & 13 & 14 \\ \hline
\end{tabular}

Table with border and grid:

  • c = column

  • & = next column

  • | = vertical line

  • \\ = new line

  • \hline = horizontal line

3.3.3. Equation Arrays

Code

Meaning

 
\begin{eqnarray*}
5x^2 - 9 &=& x + 3 \\
4x^2 &=& 12 \\
x^2 &=& 3 \\
x &\approx& \pm 1.732
\end{eqnarray*}

Equation array:

  • * = no equation numbers

  • \\ = new line

  • &=& = line up by equals sign

  • &\approx& = line up by approx. equals sign

  • \pm = plus or minus