Which of the following pairs of regular expressions are equivalent?(a) 1(01)* and (10)*1(b) x (xx)* and (xx)*x(c) x^+ and x^+ x^(*+)(d) All of the mentionedThe question was asked in semester exam.Enquiry is from Finite Automata and Regular Expressions in division Compiler Introduction of Compiler

Which of the following pairs of regular expressions are equivalent?(a)

1.	Which of the following pairs of regular expressions are equivalent?(a) 1(01)* and (10)1(b) x (xx) and (xx)x(c) x^+ and x^+ x^(+)(d) All of the mentionedThe question was asked in semester exam.Enquiry is from Finite Automata and Regular Expressions in division Compiler Introduction of Compiler
Answer» CORRECT OPTION is (d) All of the mentioned For explanation: Rule (pq)p=p (QP) Therefore–(xx) (xx*) (xx)(xx)[USING x*=x] (xx)(x)[Using xx=x] (xx)[Using xxx=x) x+

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Which of the following pairs of regular expressions are equivalent?(a) 1(01)* and (10)*1(b) x (xx)* and (xx)*x(c) x^+ and x^+ x^(*+)(d) All of the mentionedThe question was asked in semester exam.Enquiry is from Finite Automata and Regular Expressions in division Compiler Introduction of Compiler

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Which of the following pairs of regular expressions are equivalent?(a) 1(01)* and (10)1(b) x (xx) and (xx)x(c) x^+ and x^+ x^(+)(d) All of the mentionedThe question was asked in semester exam.Enquiry is from Finite Automata and Regular Expressions in division Compiler Introduction of Compiler