Normalized Hermite Polynomial
Evaluate a normalized Hermite polynomial.
The normalized (aka "probabilist") Hermite polynomials are given by
Usage
var normhermitepoly = require( '@stdlib/math/base/tools/normhermitepoly' );
normhermitepoly( n, x )
Evaluates a normalized Hermite polynomial of degree n
.
var v = normhermitepoly( 1, 1.0 );
// returns 1.0
v = normhermitepoly( 1, 0.5 );
// returns 0.5
v = normhermitepoly( 0, 0.5 );
// returns 1.0
v = normhermitepoly( 2, 0.5 );
// returns -0.75
v = normhermitepoly( -1, 0.5 );
// returns NaN
normhermitepoly.factory( n )
Returns a function
for evaluating a normalized Hermite polynomial of degree n
.
var polyval = normhermitepoly.factory( 2 );
var v = polyval( 0.5 );
// returns -0.75
Examples
var randu = require( '@stdlib/random/base/randu');
var normhermitepoly = require( '@stdlib/math/base/tools/normhermitepoly' );
var xx;
var yy;
var x;
var y;
var i;
var j;
for ( i = 0; i < 100; i++ ) {
x = (randu()*100.0) - 50.0;
for ( j = 1; j < 3; j++ ) {
y = normhermitepoly( j, x );
xx = x.toFixed(3);
yy = y.toFixed(3);
console.log( 'He_%d( %d ) = %d', j, xx, yy );
}
}