Notations of sech 

The sech symbol represents the hyperbolic secant function. Sech\([z]\) gives the hyperbolic secant of \(z\).

Description of the sech symbol

Observations of the hyperbolic secant function

Put your observations here ...

English sec1-eng.png

In the example on the right from page 294 in the English book Mathematics for engineers and scientists we see that the hyperbolic secant function is represented.
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Encoding the observations of sech

See encodings