1. 二次函数
Expression 2: "y" equals "a" Subscript, 1 , Baseline "x" squared plus "b" Subscript, 1 , Baseline "x" plus "c" Subscript, 1 , Baseliney=a1x2+b1x+c1
Expression 3: "a" Subscript, 1 , Baseline equals 1a1=1
Expression 4: "b" Subscript, 1 , Baseline equals 0b1=0
Expression 5: "c" Subscript, 1 , Baseline equals 0c1=0
2. 一次函数
Expression 8: "y" equals "a" Subscript, 2 , Baseline "x" plus "b" Subscript, 2 , Baseliney=a2x+b2
Expression 9: "a" Subscript, 2 , Baseline equals 1a2=1
Expression 10: "b" Subscript, 2 , Baseline equals 0b2=0
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