Math & Science ⇒ How can I break the line without closing a \left \right pair

[marcdein]

I have a long equation, in "align" mode which I need to split into two parts. Unfortunately, at the beginning of the RHS, I have an open square bracket: \left[. Is there a way to go over to the next line without having to close it first? Thanks.

[Stefan Kottwitz]

Hi,

you could close it in a hidden way, by

Code: Select all

\right.

However, if you need the same bracket size on the next line, you need to be careful. Either use \vphantom{highest expression}, or use \big, \Big etc. instead of \left and \right with a fixed, but equal size.

Stefan

[marcdein]

For some reason it doesn't work. I probably didn't understand it correctly. Here is an example of what I am trying to use:

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\begin{align*}
A &\le \frac{e^{-rT} }{2}(K-1) \big[a + b + c + d\right\\
 \left+ e + f + g\big].
\end{align*}

[Stefan Kottwitz]

This works, for example:

Code: Select all

\begin{align*}
A &\le \frac{e^{-rT} }{2}(K-1) \big[a + b + c + d\\
 &\quad + e + f + g\big]
\end{align*}

Stefan

[marcdein]

Thanks, that works!