For convenience, objects of class '>TrapezoidalFuzzyNumber
may be created with this function.
TrapezoidalFuzzyNumber(a1, a2, a3, a4)a number specyfing left bound of the support
a number specyfing left bound of the core
a number specyfing right bound of the core
a number specyfing right bound of the support
Other TrapezoidalFuzzyNumber-method: Arithmetic,
TrapezoidalFuzzyNumber-class,
TriangularFuzzyNumber,
alphaInterval,
as.PiecewiseLinearFuzzyNumber,
as.PowerFuzzyNumber,
as.TrapezoidalFuzzyNumber,
expectedInterval, plot