Ch

This function returns the hyperbolic cosine of a specified number.

Syntax

ch(EXP_NUM)

• EXP_NUM is an expression that returns a numeric value.

Examples

RESULT=ch(0.5) : # 1.127626

Comments

This function can be calculated by the following formula:

ch(x)=(exp(x)+exp(-x))/2

The type of result is Double.

Associated errors

See also

ach, ash, ath, sh,th, ln, sqr.