16

I feel like the parentheses look strange here:

\begin{equation}
  uv=4\left(\frac{a}{2}\right)^2\left(\frac{b}{2}\right)^2=
  4\left(\frac{s}{2}\right)^2\left(\frac{t}{2}\right)^2
\end{equation}

Do people think they should have the same heights or be like this?

enter image description here

1

1 Answer 1

22

If you use \biggl and \biggr in place of \left and \right it looks great!

\begin{equation}
uv=4\biggl(\frac{a}{2}\biggr)^2\biggl(\frac{b}{2}\biggr)^2=4\biggl(\frac{s}{2}\biggr)^2\biggl(\frac{t}{2}\biggr)^2
\end{equation}

enter image description here

The reason why the brackets look a different size is because a and s are x-height letters, whereas b and t are ascenders, so in the latter case the fraction is "taller" and consequently so are the brackets.

4
  • 6
    \biggl and \biggr are better... Commented May 14, 2018 at 14:39
  • @AndrewSwann It didn't seem to make a visible difference, but good practice nonetheless!
    – angrydust
    Commented May 14, 2018 at 14:42
  • See tex.stackexchange.com/q/1232/15925 for the differences... Commented May 14, 2018 at 17:40
  • 2
    And some ^{\!\!2} in the exponent. I would use probably \Bigl( .. \Bigr) so it kind of depends on taste.
    – Manuel
    Commented May 15, 2018 at 5:46

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