(a) If r and s are regular expressions, explain why (r+s)* + r* + s* . (b) Also carefully explain why (r*s*)* = (r + s)* .
(a) If r and s are regular expressions, explain why (r+s)* + r* + s* . (b) Also carefully explain why (r*s*)* = (r + s)* .
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
Problem 12PE
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![(a) If r and s are regular expressions, explain why (r+s)* + r* + s* .
(b) Also carefully explain why (r*s*)* = (r + s)* .](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3ecb5657-2514-4f4f-8091-200a1c847e98%2F29fec878-5466-40e2-8a67-6cede4b71683%2Fd9e7axd_processed.png&w=3840&q=75)
Transcribed Image Text:(a) If r and s are regular expressions, explain why (r+s)* + r* + s* .
(b) Also carefully explain why (r*s*)* = (r + s)* .
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