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Mathematics, 08.09.2020 14:01 hotsaucerman567

Consider the following two regular expressions: R = a∗ + b∗; S = ab∗ + ba∗ + b ∗ a + (a ∗ b)∗. A) Find a string in r but not in s.
B) Find a string in s but not in r.
C) Find a string in both r and s.
D) Find a string in {a, b}* that is in neither r nor s.

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Consider the following two regular expressions: R = a∗ + b∗; S = ab∗ + ba∗ + b ∗ a + (a ∗ b)∗. A) F...
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