For live scripts, using the LaTex equations, how to represent the absolute value?

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Sam
Sam 2019-4-22
回答： Walter Roberson 2019-4-23
I am using live editor to write a document, in which I need to represent the absolute value of a function.

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Walter Roberson
Walter Roberson 2019-4-23
Apparently it is not easy to do "properly"; see https://tex.stackexchange.com/questions/43008/absolute-value-symbols
What might be good enough for your purposes is \left|EXPRESSION\right| such as
which is $ \left|sin(x)\right| $ without the space around the $

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