###
Arguments

####
X

The angle for which the hyperbolic sine is desired, specified in radians. If *
X*
is double-precision floating-point, the result is also double-precision. Complex values are not allowed. All other types are converted to single-precision floating-point and yield floating-point results. SINH is defined as:

sinh x = (*
e*
^{
u}
- *
e*
^{
-u}
) / 2

If *
X*
is an array, the result has the same structure, with each element containing the hyperbolic sine of the corresponding element of *
X*
.

###
Examples

To find the hyperbolic sine of each element in the array [.5, .2, .4] and print the result, enter:

PRINT, SINH([.5, .2, .4])

To plot the SINH function between 0 and 2*
p*
with 100 intervals, enter:

X = 2*!PI/100 * FINDGEN(100)

PLOT, X, SINH(X)

Note: !PI is a read-only system variable that contains the single-precision value of *
p*
.