Difference between revisions of "Manuals/calci/SECH"
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* It is also called as Circular function. | * It is also called as Circular function. | ||
* SECH is the reciprocal of COSH function. | * SECH is the reciprocal of COSH function. | ||
| − | * SECH(z)=<math>cosh (z)^{-1}</math> i.e | + | * SECH(z)=<math>cosh (z)^{-1}</math> i.e, <math>\frac{ 2} {e^z+e^-z} </math>or SEC(iz). where 'I' is the imaginary unit and i=sqrt(-1). |
* Also relation between hyperbolic &trignometric function is | * Also relation between hyperbolic &trignometric function is | ||
* sec(iz)=sechz&sec(iz)=sec z | * sec(iz)=sechz&sec(iz)=sec z | ||
Revision as of 06:00, 5 November 2013
SECH(z)
- where z is any real number
Description
- This function gives the hyperbolic Secant of 'z',
- It is also called as Circular function.
- SECH is the reciprocal of COSH function.
- SECH(z)= i.e, or SEC(iz). where 'I' is the imaginary unit and i=sqrt(-1).
- Also relation between hyperbolic &trignometric function is
- sec(iz)=sechz&sec(iz)=sec z
i.e, 
or SEC(iz). where 'I' is the imaginary unit and i=sqrt(-1).Examples
SECH(z)
- z is any real number.
| SECH(z) | Value(Radian) |
| SECH(0) | 1 |
| SECH(10) | 0.00009079985933781728 |
| SECH(7) | SECH(7)=0.001823762414 |