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Depending on the input of each component to be its unreliability, instantaneous unavailability, steady-state unavailability, or probability of failure, the output exponomial will be the system's unreliability, instantaneous unavailability, steady-state unavailability, or probability of system failure. Most of the built-in functions for RBD is based on this exponomial.
**sysprob**(system_name {; arglist})

Steady-state unavailability of the system if steady-state unavailability is given for each component, or the probability of the system failure if probability of failure is given for each component
**pcont**(system_name {; arglist})

- The continuous part of the exponomial
**pzero**(system_name {; arglist})

- The value of the exponomial at t = 0
**pinf**(system_name {; arglist})

- The value of the exponomial at t =
**mean**(system_name {; arglist})

- The expectation of the exponomial. If unreliability is given, this function gives the system's mean time to failure without repair
**variance**(system_name {; arglist})

- The variance of the exponomial which is used in **pcont**
**tvalue**(system_name {; arglist})

- The value of the exponomial at time t
**cdf**(system_name {; arglist})

- Display the exponomial
**mttf**(system_name {; arglist})

- Mean time to failure for a repairable system

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