Examples

4.3 Examples

Equations within text paragraphs, $y = x2$ , $√ ------- a2 − b2$ , are bracketed like that: $ y = x^2 $ or $ \sqrt{a^2 - b^2} $.

If they are displayed, i.e. separated from the text,

[( x2 ) ] ---− 1 + sin2 𝜃 = lnx, n

( ) λ 1- Λ = Γμν + O x ,

use

$$
\left[ \left( \frac{x^2}{n} - 1 \right) + \sin^2 \theta \right] =
\ln x,
$$
\begin{displaymath}
\Lambda = {\it \Gamma}^\lambda_{\mu \nu} + \mbox{\it O} \left(
\frac 1{x} \right),
\end{displaymath}

which generates equations without numbering, while

\begin{eqnarray}
E_{\mbox{\scriptsize tot}} = 1.5 \cdot 10^{53} \mbox{erg},
\label{equation:momentum}
\label{epubtk:eq1}\end{eqnarray}

displays equations numbers.

We recommend to use the LATEX display style for separated equations

\begin{eqnarray}
\left( \frac 1{x^2} \frac{\partial^2 x}{\partial t^2} + 1
\right) = \int_a^b x dr,
\label{equation:flux}
\label{epubtk:eq3}\end{eqnarray}

and text style for inline equations like $∫ b x∕y = a xdr$ :
$ x / y = \int_a^b x dr $. This can also be enforced by \displaystyle and \textstyle resp.