The -transform has several important properties. In this lesson you will learn the most commonly used properties of the -transform in the analysis of signals and systems. In particular, the convolution-multiplication property introduces the characterization of linear time-invariant systems using the -transform of the impulse response, which is called the system function. The time-shift property allows us to easily find the system function for a system described by a linear constant coefficient difference equation. The system function is the basis for using -transforms to study systems, the topic of the following six lessons.
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