FIRST $ FOLLOW

Question

 

S -> A B
A -> f S f
A -> b b B d
B -> Ɛ
B -> c

First(S) =
First(A) =
First(B) =

Follow(S) =
Follow(A) =
Follow(B) =

Answer 1

First(S) =  f,b
First(A) = f,b
First(B) = Ɛ,c

Follow(S) =  \$,f
Follow(A) = \$,c
Follow(B) = \$,d

Comments

You mean: Follow (A) = {c} and Follow(B) = {$,d} ???

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the dollar symbol is not showing in the answer Follow(S)={$,f}, Follow(A) = {$,c}, Follow(B) = {$,d}

Answer 2

 

First(S) = f,b

First(A) =f,b

First(B) =£,c

 

Follow(S) =$ f

Follow(A) =first(B)=c,$,f

Follow(B) =d union follow (S)=d,$,f