Define Boolean function.

A Boolean function is a mathematical expression that relates one or more Boolean variables to a result, where the variables can take binary values (0 or 1). The function is constructed using logical operations like AND, OR, and NOT, and its output is based on the input values. For example, a simple Boolean function can be expressed as F = A AND B, where F is the output that depends on the values of A and B. Boolean functions are fundamental in the design and analysis of digital circuits and systems.

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