表达式5: "m" equals StartFraction, "a" plus "b" Over 2 , EndFractionm=a+b2
equals=
negative 0.5−0.5
5
表达式6: "f" prime left parenthesis, "m" , right parenthesis left parenthesis, "x" minus "m" , right parenthesis plus "f" left parenthesis, "m" , right parenthesisf′mx−m+fm
6
隐藏 标签 "A" equals left parenthesis, "a" , 0 , right parenthesisA=a,0
标签
equals=
left parenthesis, negative 3 , 0 , right parenthesis−3,0
7
隐藏 标签 "B" equals left parenthesis, "b" , 0 , right parenthesisB=b,0
标签
equals=
left parenthesis, 2 , 0 , right parenthesis2,0
8
隐藏 标签 "C" equals left parenthesis, "c" , 0 , right parenthesisC=c,0
