Decide whether the following is a regular language or not. Tell why or why not. i) L = {aw1bw2| where w1 and w2  {a, b}*} (ii) L = { an| n = 2k, k ≥ 0} iii) L ={ u | u = www,  w  {a, b}*}

C++ Programming: From Problem Analysis to Program Design
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ISBN:9781337102087
Author:D. S. Malik
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Chapter15: Recursion
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6) Decide whether the following is a regular language or not. Tell why or why not.
i) L = {aw1bw2| where w1 and w2  {a, b}*}

(ii) L = { an| n = 2k, k ≥ 0}

iii) L ={ u | u = www,  w  {a, b}*}

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