Straight bar Latex

Question

How to write the straight bar with subscript as I have attached in the picture?

enter image description here

yori · Accepted Answer · 2013-09-10T08:43:43.393

3

You can use this:

\left. \frac{dY}{dx_p} \right|_{p=1}

This code renders the "fraction" dY/dx_p surrounded by two large "bracket" symbols. The left bracket symbol is actually no symbol at all, and the right bracket is a vertical line.

And by the way, I usually want the "d" to be straight up, so I would write (with some help from Torbjørn T.):

\left. \frac{\mathrm{d}Y}{\mathrm{d}x_p} \right|_{p=1}

edited Sep 10 '13 at 08:43

answered Sep 10 '13 at 08:27

yori

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But the code showing latex error. – Complex Guy Sep 10 '13 at 08:33
1

Don't use \rm, it has been deprecated for 20 years. See Does it matter if I use \textit or \it, \bfseries or \bf, etc. You want \mathrm{d}. – Torbjørn T. Sep 10 '13 at 08:34
I'd also recommend manual scaling, in some situations autoscaling results in an excessively large vertical bar. – daleif Sep 10 '13 at 08:45

Straight bar Latex

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