split doesn't want to split \left and \right

Question

In short,

I have :

\begin{equation} \begin{split} a = & \left | \dfrac{b}{c} \\ & + \dfrac{d}{e} \right | \end{split} \end{equation}

and it complains that I want to split \left and \right, if I remove those everything is ok.

Please suggest what to do in this case?

Welcome to TeX.sx! This question seems already answered in How to make left right pairs of delimiter work over multiple lines? If that helps, please let us know. — egreg, May 20 '13 at 20:57

score 2 · Accepted Answer · edited Jul 15 '17 at 06:48

2

Any \leftneeds \right, even empty:

\begin{equation} 
\begin{split} a = & \left | \dfrac{b}{c} \right.\\
 & \left.{}+ \dfrac{d}{e} \right | \end{split} 
\end{equation}

However, it is better to use pairs of the type \bigl and \bigr, \Bigl and \Bigr, \biggl and \biggr, and so on. LaTeX can choose pairs of an improper height if, e.g., a box in the first line has different height than this one in the second line.

edited Jul 15 '17 at 06:48

ShreevatsaR

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answered May 20 '13 at 20:52

Przemysław Scherwentke

37,268

Thank you. This worked. And, yes, great point with different size heights on different lines. – Irakli May 20 '13 at 21:07

split doesn't want to split \left and \right

1 Answers1