表达式40: "F" Subscript, 2 , Baseline equals negative StartFraction, "x" Subscript, 4 , Baseline "b" Over "a" , EndFraction plus "y" Subscript, 4 , BaselineF2=−x4ba+y4
40
表达式41: "G" Subscript, 1 , Baseline equals StartFraction, "a" "A" Subscript, 2 , Baseline minus "a" "y" Subscript, 4 , Baseline Over "b" , EndFraction plus "x" Subscript, 4 , BaselineG1=aA2−ay4b+x4
表达式47: "x" Subscript, 3 , Baseline equals StartFraction, 3 "X" Over 2 , EndFractionx3=3X2
47
表达式48: "y" Subscript, 3 , Baseline equals negative StartFraction, "X" Over 2 , EndFractiony3=−X2
48
表达式49: "x" Subscript, 4 , Baseline equals "x" Subscript, 2 , Baseline minus StartFraction, "b" "R" Over "L" Subscript, "e" "n" , Baseline , EndFractionx4=x2−bRLen
49
表达式50: "y" Subscript, 4 , Baseline equals "y" Subscript, 2 , Baseline plus StartFraction, "a" "R" Over "L" Subscript, "e" "n" , Baseline , EndFractiony4=y2+aRLen
50
表达式51: "a" equals "x" Subscript, 3 , Baseline minus "x" Subscript, 2 , Baselinea=x3−x2
