Arccovercosine
Compute the inverse coversed cosine.
The inverse coversed cosine is defined as
Usage
var acovercos = require( '@stdlib/math/base/special/acovercos' );
acovercos( x )
Computes the inverse coversed cosine.
var v = acovercos( 0.0 );
// returns ~1.5708
v = acovercos( -3.141592653589793/2.0 );
// returns ~-0.6075
v = acovercos( -3.141592653589793/6.0 );
// returns ~0.4966
If x < -2
, x > 0
, or x
is NaN
, the function returns NaN
.
var v = acovercos( 1.0 );
// returns NaN
v = acovercos( -3.14 );
// returns NaN
v = acovercos( NaN );
// returns NaN
Examples
var linspace = require( '@stdlib/array/base/linspace' );
var acovercos = require( '@stdlib/math/base/special/acovercos' );
var x = linspace( -2.0, 0.0, 100 );
var i;
for ( i = 0; i < x.length; i++ ) {
console.log( acovercos( x[ i ] ) );
}