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Let F be a function that take an argument of type A and returns a result of type B. Let A be a pair of
Let F be a function that take an argument of type A and returns a result of type B.
Let A be a pair of functions from each of type integer to integer and B be a function from real to integer.
(a) Is F a valid function type?
(b) If F is not valid, explain why. Otherwise, if F is valid, explain why and design the type F (use RSL type definition).
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