Givenbr S8230xay8230wbr If Then A Is Useful Else Useless Symbol #561
Given:<br /> S->…->xAy->…->w<br /> if ____________, then A is useful, else useless symbol.
This multiple choice question (MCQ) is related to the book/course
gs gs101 Automata Theory.
It can also be found in
gs gs101 Properties of Context Free Languages - CFG-Eliminating Useless Symbols - Quiz No.1.
Given:
S->…->xAy->…->w
if ____________, then A is useful, else useless symbol.
S->…->xAy->…->w
if ____________, then A is useful, else useless symbol.
A is a non terminal
A is a terminal
w Î L
w Ë L
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