(1) ( .:) Show a derivation leading to the string aaac for the following grammar, with starting nonterminal S.. 1.2) Show the derivation tree for the derivation determined in problem (1.1) above. 1.S → aBc 2. BAB 3. A → BA 4. Aa 5.B (2)( Show a derivation tree for the string ceaedbe using the following grammar, with starting nonterminal S. 1. S→ SaA 2.S → A 3.A → AbB 4. AB 5. BcSd 6. Be 7.B

(1) ( .:) Show a derivation leading to the string aaac for the following grammar, with starting nonterminal S.. 1.2) Show the derivation tree for the derivation determined in problem (1.1) above. 1.S → aBc 2. BAB 3. A → BA 4. Aa 5.B (2)( Show a derivation tree for the string ceaedbe using the following grammar, with starting nonterminal S. 1. S→ SaA 2.S → A 3.A → AbB 4. AB 5. BcSd 6. Be 7.B

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem #6: Show that the following grammars are ambiguous by demonstrating two different parse trees and two different left-most derivations for the same terminal string in each case. Also for each case, find an equivalent unambiguous grammar: c) S-A B A-aAb ab B-abB c
→ E. Derive abbbaabba from the grammar Consider the following grammar: S- abB, A - aaBb, B rules. Show each step. How many strings can this grammar generate? Draw a syntax tree for your derivation. bbAa, A
Question 1 Full explain this question and text typing work only thanks I really need help solving both parts of this question. Please help me and thank you!!!
(5) Consider the grammar G=(V,T,E,P) with V={E,I}, T={a, b, c, +,-, *, (. )}, and productions R → R+R|R -R | R* | (R) I = a|b|c. ) Show that G is ambiguous by giving two different derivation trees for string b+c-a (ii) Change the above grammar into the one without ambiguity.
Design the CFG rules for (a+b)*aa(a+b)* consider following S→ aSa| aBa B→ bB|b use the set notation to define the language generated by the grammar? what is the shortest string that can be produced from the grammar? Write another possible string that can be generated from the language?
1. Consider the context free grammar below: (S) → ((L)) | a (L) → (L), (S) | (S) Give a leftmost derivation for the string (a, (a, a)), then draw the corresponding parse tree.
CFG (Context-Free Grammars)
Problem #6: Show that the following grammars are ambiguous by demonstrating two different parse trees and two different left-most derivations for the same terminal string in each case. Also for each case, find an equivalent unambiguous grammar: c) S-A B A-aAb ab B-abB c
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