SECH
Name
SECH
Purpose
Calculates the hyperbolic inverse cosine function (sech).
Category
Math
Calling Sequence
Result = SECH(X)
Inputs
X: Argument to sech (may be an array).
Outputs
1 / cosh(X)
Example
IDL> PRINT, SECH(1.)
0.648054
Modification History
Written by: Jeremy Bailin
12 June 2008 Public release in JBIU