# How to write this in Latex? [duplicate]

This question already has an answer here:

Please see the image? How to write this in latex?

## marked as duplicate by Werner macros StackExchange.ready(function() { if (StackExchange.options.isMobile) return; $('.dupe-hammer-message-hover:not(.hover-bound)').each(function() { var$hover = $(this).addClass('hover-bound'),$msg = $hover.siblings('.dupe-hammer-message');$hover.hover( function() { $hover.showInfoMessage('', { messageElement:$msg.clone().show(), transient: false, position: { my: 'bottom left', at: 'top center', offsetTop: -7 }, dismissable: false, relativeToBody: true }); }, function() { StackExchange.helpers.removeMessages(); } ); }); }); Feb 5 '18 at 20:09

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• Welcome to TeX.SE. Postings of the "do this for me-request" variety are generally discouraged on this site. Please tell us what you've tried so far. That does the "this" in "how to write this in LaTeX" refer to? The font style? All three lines shown in the screenshot, or just a subset of lines? Please be specific. – Mico Feb 5 '18 at 19:47
• See the cases environment of the amsmath package. – Steven B. Segletes Feb 5 '18 at 19:47
• Are $(a)$ and $(b)$ obtained by hand,or are they in an enumerate environment? – Bernard Feb 5 '18 at 20:07

## 1 Answer

\documentclass{article}

\usepackage{amsmath}
\usepackage{enumerate}

\begin{document}

\begin{enumerate}[(a)]
\item
\begin{align}
y \equiv 0 &
\end{align}
\item
\begin{align}
\begin{cases}
y = \left(\frac{2}{3}x\right)^{3/2} & x \ge 0 \\
y = 0 & x \le 0
\end{cases}
\end{align}
\end{enumerate}

\end{document}


• Thanks for taking care of this! Would you mind moving x to the numerator and replacing = by \equiv to make the thing a bit closer to the OP's picture? – user121799 Feb 5 '18 at 21:56