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1. Given the following grammar S à 0A0 | 1B1 | BB; A à C; B à S | A; C à S | ε, (a) (Derivation)
Given a left-most and right-most derivation of a string 01001110 (b) (Parse tree) Draw the parse tree from step (a)
2. (Language to PDA) Design a PDA whose language is {ambncpdq | m + n = p + q}.
3. (a) (Language to CFG, closure property) Construct CFG for the following language L = {bi a2i | i >= 0} (b) (CFG to PDA) Design a PDA for the above grammar using a transition diagram and specifying the start/accept state(s), start symbol on the stack. (c) (PDA computation) Show the stack
content, state of the PDA in each step given an input string baa
4. (Pumping lemma) Use pumping lemma to show that the following language is not context free {0i1j | i is not a multiple of j}
5. Show that the language L = {aibj |i ≠ j) is context free.
Differentiate between Perfect and Simple Tenses Understanding verb tenses Verb tenses can be divided into six categories: present, past, future, and present perfect, past perf
State the distinguish features of literary writing by citing examples an discussing them. in 40words
A group of do-gooder college students believes that herbal tea has remarkable powers. To test this belief, they make weekly visits to a local nursing home, visiting with the reside
Organizing your essay The introduction is critical. Remember the old saying First impressions are the most important? This is true with state assessment writing. The introducto
how to speak well
Features of Science Writing How science writing is like other writing You may, in your travels, have come across the misconception that science and writing have nothing to d
what is a verb?
What is a noun? A noun is a word used to name a person, place, thing, or idea. Nouns are very important words because they give names to everything we wish to talk about. Ever
the language english came from
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