Mathematics, 10.07.2019 01:30 haileybland8050
Example 7.6 construct a pda that accepts the language generated by a grammar with productions s-asbbla we first transform the grammar into greibach normal form, changing the productions to sab asa|a, bb, b.s-asa]a, a-bb_b-b the corresponding automaton will have three states {go. qı. g: }, with initial state go and final state q2. first, the start symbol s is put on the stack by 3 (go. a, z)= {(gı, s2)} the production s- asa will be simulated in the pda by removing s from the stack and replacing it with sa, while reading a from the input. similarly, the rule sa should cause the pda to read an a while simply removing s. thus, the two productions represented in the pda by are (gi, a, s) = {(q1, sa), (g1, 2)}. analogous manner, the other productions give o, b,a)6(q1,b, b)={(q1,b)},{(q1a)}.5(q1,b, a)={(q1,b)},& (q1,b. b)={(q1,)}. the appearance of the stack start symbol on top of the stack signals the completion of the derivation and the pda is put into its final state by in an the construction of this example can be adapted to other cases, leading to a general result.
Answers: 3
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Mathematics, 21.06.2019 17:30
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Javier bought a painting for $150. each year, the painting's value increases by a factor of 1.15. which expression gives the painting's value after 77 years?
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Example 7.6 construct a pda that accepts the language generated by a grammar with productions s-asbb...
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