sinh
(PHP 4 >= 4.1.0)
sinh -- Hyperbolic sine
Description
float sinh ( float arg)
Returns the hyperbolic sine of arg, defined as (exp(arg)
- exp(-arg))/2.
See also: sin(), asinh(), cos(), and tan().
sqrt
(PHP 3, PHP 4 )
sqrt -- Square root
Description
float sqrt ( float arg)
Returns the square root of arg.
Example 1. sqrt() example
<?php
// Precision depends on your precision directive
echo sqrt(9); // 3
echo sqrt(10); // 3.16227766 ...
?>
See also pow().
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