1

I need to do this box enter image description here. How can I do that?

  • I tried but result is box around whole equation, not like in the picture. – Blichar Jan 19 '17 at 13:49
  • ok, I misunderstood your question. I thought your picture shown your current result, and not what you're expecting. – ebosi Jan 19 '17 at 13:51
2

Hackjob to get

enter image description here

First I print a boxed equation with horizontal space equivalent of the root, then print the root in box with white background on top.

\documentclass{article}
\usepackage{amsmath}
\usepackage{xcolor}
\begin{document}
\[
\fboxsep=1pt\relax
\newcommand\MyRoot{{}= \sqrt{\frac{4\pi\delta}{\sigma_1\bigl((X+Y)(X-Y)\bigr)^{\sigma_2}}}}
\ooalign{%
$\displaystyle\boxed{\hat{g} \hphantom{\displaystyle\MyRoot} \approx 999.121}$\cr
\fboxsep=0pt\relax\hspace{0.8em}\colorbox{white}{$\displaystyle\MyRoot$}
}
\]
\end{document}
4

egreg suggests using \boxed macro of the amsmath package.

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\fboxsep=1pt\relax
\boxed{\hat g} = \sqrt{\frac{4\pi\delta}{\sigma_1\bigl((X+Y)(X-Y)\bigr)^{\sigma_2}}} 
\boxed{{}\approx 999.121}
\]
\end{document}

Without any packages, (i.e., with \fbox):

\documentclass{article}
\begin{document}
\[
\fboxsep=1pt\relax
\fbox{$\hat g$} = \sqrt{\frac{4\pi\delta}{\sigma_1\bigl((X+Y)(X-Y)\bigr)^{\sigma_2}}} 
\fbox{${}\approx 999.121$}
\]
\end{document}

enter image description here

FOLLOW UP

I did not originally perceive the 3-sided nature of the applied boxes in the OP's figure. That can be achieved using the current method, with the addition of a \clipbox upon the \fbox. It has been macroed as \boxl{} and \boxr{}:

\documentclass{article}
\usepackage{trimclip}
\newcommand\boxl[1]{\clipbox{0pt 0pt 1.4\fboxrule{} 0pt}{\fbox{$#1{}$}}}
\newcommand\boxr[1]{\clipbox{1.4\fboxrule{} 0pt 0pt 0pt}{\fbox{${}#1$}}}
\begin{document}
\[
\fboxsep=1pt\relax
\boxl{\hat g}
= \sqrt{\frac{4\pi\delta}{\sigma_1\bigl((X+Y)(X-Y)\bigr)^{\sigma_2}}} 
\boxr{\approx 999.121}
\]
\end{document}

enter image description here

  • 1
    Load amsmath and use \boxed – egreg Jan 19 '17 at 13:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.