DERIVATIONS - LEFTMOST DERIVATION, RIGHTMOST DERIVATION
#theoryofcomputation #grammar #derivation #derivationtree #lmd #rmd #leftmostderivation #rightmostderivation #parsetree #finitecontrol #storage #finiteautomata #regularexpressions #postcorrespondenceproblem #regularlanguages #toc #computerscience #design #construct
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DERIVATIONS - LEFTMOST DERIVATION, RIGHTMOST DERIVATION
• DERIVATIONS - LEFTMOST...
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TOPIC - DERIVATIONS - LEFTMOST DERIVATION, RIGHTMOST DERIVATION • DERIVATIONS - LEFTMOST...
Derivations:
 The production rules are used from head to body of the grammar to derive certain strings.
 Here we start by expanding the start symbol using any of its productions by replacing one the variables by any of its productions until we derive a string containing all the terminals.
 If A-β is a production then replace A by β to derive some string.
Types of Derivation:
The derivation may be
1. Left Most Derivation - LMD
2. Right Most Derivation - RMD
Left Most Derivation - LMD
 At each step of derivation, if a production is applied to the left most non-terminal then the derivation is called left-most derivation.
Right Most Derivation - RMD
 At each step of derivation, if a production is applied to the right most non-terminal then the derivation is called right-most derivation.
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