[Tex/LaTex] Vertical line spanning fraction

equationsmath-mode

I would like to write the following equation:

enter image description here

How do I produce the vertical line and the subscript 'iso-effect'?

Best Answer

Try

\documentclass[preview]{standalone}

\usepackage{amsmath}

\begin{document}
\begin{equation*}
\textrm{RBE}=\left.\frac{D_{\textrm{photon}}}{D_{\textrm{test}}}\right\rvert_{\textrm{iso-effect}}
\end{equation*}
\end{document}

enter image description here

Related Solutions

Spacing – Adjust Space Between Displayed Equation and Following Text

The space is one of the lengths

\belowdisplayskip=12pt plus 3pt minus 9pt
\belowdisplayshortskip=7pt plus 3pt minus 4pt

so you can set those to whatever values you like using the above primitive syntax of \setlength so the first tries to be 12pt but will shrink to 9pt or stretch to 21pt to help page breaking.

[Tex/LaTex] How to place the subscript under two summation signs in a fraction

You need to enclose the two summation symbols in \mathop{} and then place \limits after that.

\documentclass{article}
\begin{document}

\begin{equation}
  \frac{\mathop{\sum\sum}\limits_{i \neq j}
    \sum\limits_{x}\sum\limits_{y}[\pi_{x(i),y(j)} -
    \pi_{x(i)}\pi_{y(j)}]}{\sigma^2_X} 
\end{equation}

\end{document}

Best Answer

Related Solutions

Spacing – Adjust Space Between Displayed Equation and Following Text

[Tex/LaTex] How to place the subscript under two summation signs in a fraction

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