Contents
The six basic properties of Systems_OldKiwi
Memory_OldKiwi
A system with memory has outputs that depend on previous (or future) inputs.
Example of a system with memory: $ y(t) = x(t - \pi) $
Example of a system without memory: $ y(t) = x(t) $
Invertibility_OldKiwi
An invertible system is one in which there is a one-to-one correlation between inputs and outputs.
Example of an invertible system: $ y(t) = x(t) $
Example of a non-invertible system: $ y(t) = |x(t)| $
(both x(t) = -3 and x(t) = 3 yield the same result)
