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( \newcommand{\kernel}{\mathrm{null}\,}\)

$try-it.png$

$how-to.png$

piece-wise function:

$| x | = {\begin{cases} - x & if x < 0 \\ x & if x \geq 0 \end{cases}$

$ℵ$

$ℵ_{0}$ $ℵ_{1}$

$\altneg$

$P$

$\bold t h i s$

$\~$

$k \cdot 5$

$p \Leftrightarrow q$

$lim_{x \to - 2} (3 x^{3} - 2 x + 7)$ .

$\begin{matrix} lim_{x \to 3} \frac{2 x^{2} - 3 x + 1}{5 x + 4} = \frac{10}{19} . \end{matrix}$

x→±∞

$f (x) = \sqrt{x - 3}$ .

$\frac{1}{4}$

$Misplaced '&'$

$\begin{matrix} lim_{θ \to 0} \frac{1 - \cos θ}{θ} = 0 \end{matrix}$

$y \in R$

$Q$

$- 1 \notin Z^{+}$

$\begin{matrix} (1) & \exists x p (x), \end{matrix}$

$\begin{matrix} (2) & \forall x p (x), \end{matrix}$

Gilbert Strang (MIT) and Edwin “Jed” Herman (Harvey Mudd) with many contributing authors. This content by OpenStax is licensed with a CC-BY-SA-NC 4.0 license. Download for free at http://cnx.org.