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