[Tex/LaTex] Multiple lines one side of equation with a Curly Bracket

Question

This question already has answers here:

Large braces for specifying values of variables by condition

(4 answers)

Closed 5 years ago.

I am trying to write an equation that looks like this, everything should be left aligned on the right hand side.

I am using the following code to write this equation.

  \begin{equation}
  D_{it} = \Bigg\{if \ bank \ i \ issues \ ABS \ at \ time \ t \\
  2 \ if \ bank \ i \ issue \ CBs \ at \ time \ t \\ 
  \ 0 \ otherwise
  \end{equation}

I am putting \\ for a new line but it does not work. Please guide how I can write the desired equation.

Answer 1

Use the cases environment, like this.

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
  D_{it} =
    \begin{cases}
      1 & \text{if bank $i$ issues ABs at time $t$}\\
      2 & \text{if bank $i$ issues CBs at time $t$}\\
      0 & \text{otherwise}
    \end{cases}       
\end{equation}
\end{document}