If the @{cumulative} boolean is true it will return: 1 - exp (-(@{x}/@{beta})^@{alpha}),otherwise it will return (@{alpha}/@{beta}^@{alpha}) * @{x}^(@{alpha}-1) * exp(-(@{x}/@{beta}^@{alpha})).
Baldin eta boolear @{metatua} egiazkoa bada, hau ematen du: 1 - exp (-(@{x}/@{beta})^@{alfa}); bestela, hau ematen du: (@{alfa}/@{beta}^@{alfa}) * @{x}^(@{alfa}-1) * exp(-(@{x}/@{beta}^@{alfa})).