equal
deleted
inserted
replaced
98 |
98 |
99 Find out why? |
99 Find out why? |
100 |
100 |
101 \item Give a regular expressions that can recognise all |
101 \item Give a regular expressions that can recognise all |
102 strings from the language $\{a^n\;|\;\exists k.\; n = 3 k |
102 strings from the language $\{a^n\;|\;\exists k.\; n = 3 k |
103 + 1 \}$. \end{enumerate} |
103 + 1 \}$. |
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104 |
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105 \item Give a regular expression that can recognise an odd |
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106 number of $a$s or an even number of $b$s. |
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107 |
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108 \end{enumerate} |
104 |
109 |
105 \end{document} |
110 \end{document} |
106 |
111 |
107 %%% Local Variables: |
112 %%% Local Variables: |
108 %%% mode: latex |
113 %%% mode: latex |