The Beta Distribution
Random:
double
gsl_ran_beta
(const gsl_rng *
r
, double
a
, double
b
)
This function returns a random variate from the beta distribution. The distribution function is,
p(x) dx = {\Gamma(a+b) \over \Gamma(a) \Gamma(b)} x^{a-1} (1-x)^{b-1} dx
for 0 <= x <= 1.
Function:
double
gsl_ran_beta_pdf
(double
x
, double
a
, double
b
)
This function computes the probability density p(x) at
x
for a beta distribution with parameters
a
and
b
, using the formula given above.