Math & Science ⇒ I'm tired of typing \left and \right all the time...

[Singularity]

...so I tried to create new commands

Code: Select all

\newcommand{\(}{\left(}
\newcommand{\)}{\right(}

at the top of my document. But, as you expected, that was already defined. Is there a way around that which a non-expert can implement?

[Johannes_B]

You could do something more robust. Remember to give your own commands unique names.

Code: Select all

\documentclass{article}
\usepackage{mathtools}
\newcommand{\lpar}{\left(}
\newcommand{\rpar}{\right)}
\begin{document}
\[ 
\lpar x+y \rpar^4 = x^4  +  4 x^3y  +  6 x^2 y^2  + 
4 x y^3  +  y^4
\]
\[ \lpar\frac{x+1}{\frac{1}{x}}\rpar \]
\end{document}

[mas]

For friends/colleagues who mention this sort of problem, I always suggest to use the editor provided shortcuts to cut down the typing.

I also suggest that you take a look at the package commath to ease typing material with different brackets et al. The following code looks simpler:

Code: Select all

\documentclass{article}

\usepackage{mathtools}
\usepackage{commath}

\begin{document}
\[
\del{x+y}^4 = x^4  +  4 x^3y  +  6 x^2 y^2  +
4 x y^3  +  y^4
\]

\[ \del{\frac{x+1}{\frac{1}{x}}} \]

\end{document}

[Johannes_B]

Package physics could be helpful as well.

[mas]

Package physics could be helpful as well.

Thanks. That is a very handy set of macros