2.7 KiB
2.7 KiB
y1
Compute the Bessel function of the second kind of order one.
The Bessel function of the second kind of order one is defined as
Usage
var y1 = require( '@stdlib/math/base/special/bessely1' );
y1( x )
Computes the Bessel function of the second kind of order one at x
.
var v = y1( 0.0 );
// returns -Infinity
v = y1( 1.0 );
// returns ~-0.781
v = y1( Infinity );
// returns 0.0
If x < 0
or x
is NaN
, the function returns NaN
.
var v = y1( -1.0 );
// returns NaN
v = y1( -Infinity );
// returns NaN
v = y1( NaN );
// returns NaN
Examples
var randu = require( '@stdlib/random/base/randu' );
var y1 = require( '@stdlib/math/base/special/bessely1' );
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = randu() * 10.0;
console.log( 'y1(%d) = %d', x, y1( x ) );
}