Scythe-1.0.3
double scythe::dbeta ( double  x,
double  a,
double  b 
) [inline]

The beta density function.

Computes the value of the beta probability density function with shape parameters a and b at the desired quantile, x.

It is also possible to call this function with a Matrix of doubles as its first argument. In this case the function will return a Matrix of doubles of the same dimension as x, containing the result of evaluating this function at each value in x, given the remaining fixed parameters. By default, the returned Matrix will be concrete and have the same matrix_order as x, but you may invoke a generalized version of the function with an explicit template call.

Parameters:
xThe desired quantile, between 0 and 1.
aThe first non-negative beta shape parameter.
bThe second non-negative beta shape parameter.
See also:
pbeta(double x, double a, double b)
rng::rbeta(double a, double b)
betafn(double a, double b)
lnbetafn(double a, double b)
Exceptions:
scythe_invalid_arg(Level 1)
scythe_range_error(Level 1)
scythe_precision_error(Level 1)

References betafn(), pow(), and SCYTHE_CHECK_10.