表达式17: "E" Subscript, 2 , Baseline equals left parenthesis, "l" Subscript, "o" "g" , Baseline minus "f" Subscript, 2 , Baseline left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis , right parenthesis squaredE2=log−f2x12
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表达式18: "s" Subscript, 2 , Baseline equals total left parenthesis, "E" Subscript, 2 , Baseline , right parenthesiss2=totalE2
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表达式19: "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis equals 2 "x" minus 2 "x" Subscript, "m" , Baseline plus "y" Subscript, "m" , Baselinef3x=2x−2xm+ym
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表达式20: "E" Subscript, 3 , Baseline equals left parenthesis, "l" Subscript, "o" "g" , Baseline minus "f" Subscript, 3 , Baseline left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis , right parenthesis squaredE3=log−f3x12
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表达式21: "s" Subscript, 3 , Baseline equals total left parenthesis, "E" Subscript, 3 , Baseline , right parenthesiss3=totalE3
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表达式22: "y" equals left parenthesis, 5 , right parenthesisy=5
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表达式23: "a" equals "s" Subscript, 2 , Baseline minus "s" Subscript, 1 , Baseline plus StartFraction, "s" Subscript, 3 , Baseline minus 4 "s" Subscript, 2 , Baseline plus 3 "s" Subscript, 1 , Baseline Over 2 , EndFractiona=s2−s1+s3−4s2+3s12
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表达式24: "b" equals StartFraction, "s" Subscript, 3 , Baseline minus 4 "s" Subscript, 2 , Baseline plus 3 "s" Subscript, 1 , Baseline Over negative 2 , EndFractionb=s3−4s2+3s1−2
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表达式25: "y" equals "a" "x" squared plus "b" "x" plus "s" Subscript, 1 , Baseline left brace, StartFraction, "m" Subscript, "f" "i" "n" "a" "l" , Baseline Over 3 , EndFraction less than or equal to "x" less than or equal to StartFraction, 5 "m" Subscript, "f" "i" "n" "a" "l" , Baseline Over 3 , EndFraction , right brace left brace, "x" greater than 0 , right bracey=ax2+bx+s1mfinal3≤x≤5mfinal3x>0
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表达式26: "y" equals "a" "x" squared plus "b" "x" plus "s" Subscript, 1 , Baseline left brace, StartFraction, "m" Subscript, "f" "i" "n" "a" "l" , Baseline Over 3 , EndFraction greater than or equal to "x" greater than or equal to StartFraction, 5 "m" Subscript, "f" "i" "n" "a" "l" , Baseline Over 3 , EndFraction , right brace left brace, "x" less than 0 , right bracey=ax2+bx+s1mfinal3≥x≥5mfinal3x<0
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表达式27: "m" Subscript, "f" "i" "n" "a" "l" , Baseline equals negative StartFraction, "b" Over 2 "a" , EndFractionmfinal=−b2a
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表达式28: "g" left parenthesis, "x" , right parenthesis equals "m" Subscript, "f" "i" "n" "a" "l" , Baseline left parenthesis, "x" minus "x" Subscript, "m" , Baseline , right parenthesis plus "y" Subscript, "m" , Baselinegx=mfinalx−xm+ym
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表达式41: "R" equals StartFraction, left parenthesis, length left parenthesis, "E" , right parenthesis times total left parenthesis, "x" Subscript, 1 , Baseline times "l" Subscript, "o" "g" , Baseline , right parenthesis , right parenthesis minus left parenthesis, total left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis times total left parenthesis, "l" Subscript, "o" "g" , Baseline , right parenthesis , right parenthesis Over StartRoot, left parenthesis, length left parenthesis, "E" , right parenthesis times total left parenthesis, "x" squared , right parenthesis minus left parenthesis, total left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis , right parenthesis squared , right parenthesis left parenthesis, length left parenthesis, "E" , right parenthesis times total left parenthesis, "l" squared , right parenthesis minus left parenthesis, total left parenthesis, "l" Subscript, "o" "g" , Baseline , right parenthesis , right parenthesis squared , right parenthesis , EndRoot , EndFractionR=lengthE·totalx1·log−totalx1·totalloglengthE·totalx21−totalx12lengthE·totall2og−totallog2
