精选优质文档- 倾 情为你奉上 专心-专注- 专业 第三章 N=D= 0,1,2,3,4,5,6,7,8,9 N=ND=NDD L=a |a(0|1|3.|9) n 且 n=1 (0|1|3.|9) n 且 n=1 ab, a n b n n=1 第6题. (1) = = = i (2) = = = () = () = ()=(i) (3) = = * = * =i*i (4) = + = + = *+ = *+ = *+ = i*i+i (5) = +=+ = +=i+ = i+ = i+() = i+(+) = i+(+) = i+(i+i) (6) = + = + = + = i+ = i+* = i+* = i+i*i 第7题 * i i + i精选优质文档- 倾 情为你奉上 专心-专注- 专业 + i i * i 第9题 语法树 s s s * s s + a a a 推导: S=SS*=SS+S*=aa+a* 11. 推导:E=E+T=E+T*F 语法树: E E + T T F * 短语: T*F E+T*F 直接短语: T*F 句柄: T*F 12 精选优质文档- 倾
