How can I use

\left(.... \right)

which automatically adjust size of parenthesis with it's inside content, in a multiline equation in

\begin{align} and \begin{equation}


  • you can't. Instead use \biggl( ... \\ .. \biggr) or whatever size you need. Apr 15, 2015 at 7:22
  • @DavidCarlisle Thanks!, I know about this, but I need parenthesis bigger than \Biggl(, also this doesn't adjust parenthesis size with its inside content!
    – QGravity
    Apr 15, 2015 at 7:36
  • you really need huge parens on one line of a multiline display? strange:-) The definition of \big and friends is only a single line each so it is easy to make a bigger one if needed. It doesn't adjust automatically but that's just how it is, Apr 15, 2015 at 8:18

1 Answer 1


You can, as documented in mathtools, thanks to a code by Sébastien Gouezel (§3.6.1 of the doc):


\newcommand\MTkillspecial[1]{% helper macro

A =\! \begin{aligned}[t]
  \brparen[\Big]{& a + B + c + d + e{} \\
         & + f +g + h}\

A =\! \begin{aligned}[t]
  \brparen*{& \frac{K^2}{L^2} + B + + C + D + E\\
         & + F + G + H}

enter image description here


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