/**
* Computes the value of f(x) given the mixture.
*
* @param x the value
* @return the value of f(x)
*/
public double f(double x) {
DoubleVector points = mixingDistribution.getPointValues();
DoubleVector values = mixingDistribution.getFunctionValues();
return Maths.dchisq(x, points).timesEquals(values).sum();
}
