0 votes 0 votes Let ‘r’ be a regular expression, then which of the following statements is/are TRUE for every 'r'? S1: There exists 'x' which satisfies property r + x = x. S2: There exists 'x' which satisfies property r.x = x himgta asked Jul 13, 2018 himgta 262 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Conncatanation with Φ is Φ. (r.Φ=Φ) Both option ate true abhishekmehta4u answered Jul 13, 2018 abhishekmehta4u comment Share Follow See all 2 Comments See all 2 2 Comments reply himgta commented Jul 13, 2018 reply Follow Share is S1 true for every r as asked in the question? 0 votes 0 votes abhishekmehta4u commented Jul 13, 2018 reply Follow Share We put any value of r it must satisfied. r+(a+b)*= (a+b)* It is true for every r 0 votes 0 votes Please log in or register to add a comment.