public BetaDistribution(double a, double b)
{
alpha = a;
beta = b;
gamma1 = new GammaDistribution(alpha, 1);
gamma2 = new GammaDistribution(beta, 1);
}
public BetaDistribution()
{
alpha = 1;
beta = 1;
gamma1 = new GammaDistribution(alpha, 1);
gamma2 = new GammaDistribution(beta, 1);
}