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enter image description here

I'm trying to do line and $t_b$ exactly as on the image, but couldn't find out how.

Ingmar
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Chemistry
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    Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Jul 24 '23 at 23:22
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    Since you don't provide any code, nobody can't guess what you did wrong. Also, I don't see any problem in this picture. Vertical alignment seems to be fine, so you should also explain what you want to obtain. – Miyase Jul 24 '23 at 23:25
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    Welcome to TeX.SE. – Mico Jul 25 '23 at 00:40
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    Have you tried \Big\vert_{t_b}? – Mico Jul 25 '23 at 00:45

1 Answers1

2

Here the example of the image below.

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}
\begin{document}
\[\delta x_b \times \frac{\partial \mathcal L}{\partial \dot{x}}\Bigr|_{t_b} -0\]
\end{document}

enter image description here

Sebastiano
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