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Peter Linz Edition 4 Exercise 5.2 Question 12 (Page No. 145)
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Show that the language $L =$ {$ww^R : w ∈$ {$a,b$}$^*$} is not inherently ambiguous.
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Peter Linz Edition 4 Exercise 5.2 Question 9 (Page No. 145)
Show that a regular language cannot be inherently ambiguous.
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Peter Linz Edition 4 Example 5.13 (Page No. 144)
Consider the language $L = \{a^nb^nc^m\}U \{a^nb^mc^m\}$ with $n$ and $m$ nonnegative. Which of the following options is correct? There is no context free grammar possible for $L$. There exists a simple grammar for $L$. There exists an unambiguous grammar for $L$. There exists an ambiguous grammar for $L$.
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Peter Linz Edition 4 Exercise 5.2 Question 16 (Page No. 145)
Show that the grammar with productions $S\rightarrow aAB,$ $A\rightarrow bBb,$ $B\rightarrow A|\lambda.$ is unambiguous.
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Peter Linz Edition 4 Exercise 5.2 Question 15 (Page No. 145)
Show that the grammar with productions $S\rightarrow SS,$ $S\rightarrow \lambda,$ $S\rightarrow aSb,$ $S\rightarrow bSa.$ is ambiguous.
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