Hyperbolic Secant
The hyperbolic secant is defined as
It has a Maximum at
and inflection points at 
.See also Benson's Formula, Catenary, Catenoid, Euler Number, Hyperbolic Cosine, OblateSpheroidal Coordinates, Pseudosphere, Secant, Surface of Revolution, Tractrix, Tractroid
References
Abramowitz, M. and Stegun, C. A. (Eds.). ``Hyperbolic Functions.'' §4.5 in Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing. New York: Dover, pp. 83-86, 1972. Spanier, J. and Oldham, K. B. ``The Hyperbolic Secant 
and Cosecant 
Functions.'' Ch. 29 in An Atlas of Functions. Washington, DC: Hemisphere, pp. 273-278, 1987.
- Gudermannian Function
- Guldinus Theorem
- Gumbel's Distribution
- Guthrie's Problem
- Gutschoven's Curve
- Guy's Conjecture
- Gyrate Bidiminished Rhombicosidodecahedron
- Gyrate Rhombicosidodecahedron
- Gyrobicupola
- Gyrobifastigium
- Gyrobirotunda
- Gyrocupolarotunda
- Gyroelongated Cupola
- Gyroelongated Dipyramid
- Gyroelongated Pentagonal Bicupola
- Gyroelongated Pentagonal Birotunda
- Gyroelongated Pentagonal Cupola
- Gyroelongated Pentagonal Cupolarotunda
- Gyroelongated Pentagonal Pyramid
- Gyroelongated Pentagonal Rotunda
- Gyroelongated Pyramid
- Gyroelongated Rotunda
- Gyroelongated Square Bicupola
- Gyroelongated Square Cupola
- Gyroelongated Square Dipyramid