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LaTex Help Help with LaTex and writing math equations


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  • 1 Post By zylo
  • 1 Post By v8archie
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September 13th, 2018, 07:43 AM   #1
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Evaluation Symbol

How do you do this (evaluation symbol) with a tall bar, similar to integral?

$\displaystyle {|^{a}}_{-a}$

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Last edited by zylo; September 13th, 2018 at 07:46 AM.
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September 13th, 2018, 09:11 AM   #2
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$\displaystyle (x-a)\biggr\rvert_{a}^{b}$

I figured it out using integration symbol as a model and looking up bigger vertical bar:

"(x-a)\biggr\rvert_{a}^{b}"
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September 13th, 2018, 11:15 AM   #3
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$$\left. x + \cos x\right|_a^b$$
Code:
$$\left. x + \cos x\right|_a^b$$
$$\left. x + \frac{x^2}{2}\right|_a^b$$
Code:
$$\left. x + \frac{x^2}{2}\right|_a^b$$
It works for any type of bracket.

$$\left. \begin{aligned} x+y&=3 \\ x-y&=1 \end{aligned} \right\} \implies \left\{ \begin{aligned} x &= 2 \\ y &= 1\end{aligned} \right.$$
Code:
$$\left.
\begin{aligned} x+y&=3 \\ x-y&=1 \end{aligned} 
\right\} \implies \left\{ 
\begin{aligned} x &= 2 \\ y &= 1\end{aligned}
\right.$$
\left \right pairs must be matched.
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Last edited by v8archie; September 13th, 2018 at 11:19 AM.
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