statsmodels.sandbox.distributions.transformed.SquareFunc¶

class statsmodels.sandbox.distributions.transformed.SquareFunc[source]¶

class to hold quadratic function with inverse function and derivative

using instance methods instead of class methods, if we want extension to parametrized function

Methods

derivminus(x)
derivplus(x)
inverseminus(x)
inverseplus(x)
squarefunc(x)