Artificial intelligence
When a top-level function is entered, the LISP processor do(es)

It reads the function entered
All of these
It evaluates the function and the function's operands
None of these
It prints the results returned by the function.

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Artificial intelligence
What is a heuristic function?

A function whose return type is nothing
A function to solve mathematical problems
A function that maps from problem state descriptions to measures of desirability
A function which takes parameters of type string and returns an integer value

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