# Lars Eighner's Homepage

## LarsWiki

### MathJax Fragments

MathJax symbols and recurring sequences.

#### Evaluate

Vertical bar symbol meaning evaluate at a point or range

\left. Is invisible. The point is to make the bar stretchy, which requires \right|


\left. {1 \over y}\right|_{x=3}^4



{$$\left. {1 \over y}\right|_{x=3}^4$$}

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This is a student's notebook. I am not responsible if you copy it for homework, and it turns out to be wrong.

Figures are often enhanced by hand editing; the same results may not be achieved with source sites and source apps.

### December 23, 2018

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Lars

Contact by Snail!

Lars Eighner
APT 1191
8800 N IH 35
AUSTIN TX 78753
USA

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