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bine files anize pages issistant herative summary quest e - signatures an & OCR otect a PDF edact a PDF ompress a PDF Trepare a

bine files
anize pages
issistant
herative summary
quest e-signatures
an & OCR
otect a PDF
edact a PDF
ompress a PDF
Trepare a form
t, edit and e-sign PDF forms & agreements
Question 1
[15]
Build a DPDA to show that the language L={(ba)na(ab)n-2|n>2} is deterministic context free.
Question 2
[15]
Prove that the language L={banb2nan+1|n>0} over the alphabet ??={a,b} is non-context free. Use the pumping lemma with length.
Question 3
[10]
Let L1 be the grammar generating (aa)**. Let L2 be the grammar generating (a+b)**ba(a+b)**.
First provide the grammars generating L1 and L2 respectively. Then apply the applicable theorem of Chapter 17 to determine L1L2.
Question 4
[10]
Decide whether the grammar given below generates any words.
SxY
xSY
YSx
xa
Yb
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