效绵鼎 Example:Iterated Derivation S->01;S->0S1. ■S=>0S1=>00S11=>000111. Thus S=>*S;S=>*0S1;S=>*00S11;S=>* 000111. .13Example: Iterated Derivation ◼ S -> 01; S -> 0S1. ◼ S => 0S1 => 00S11 => 000111. ◼ Thus S =>* S; S =>* 0S1; S =>* 00S11; S =>* 000111. 13