表达式13: "s" left parenthesis, "x" , "y" , right parenthesis equals StartFraction, log left parenthesis, exp left parenthesis, "K" "s" Subscript, 12 , Baseline left parenthesis, "x" , "y" , right parenthesis , right parenthesis plus exp left parenthesis, "K" "d" Subscript, 3 , Baseline left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesis Over "K" , EndFractionsx,y=logexpKs12x,y+expKd3x,yK
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表达式14: "K" equals negative 32.3K=−32.3
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display
对学生隐藏该文件夹。
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表达式16: positive "d" Subscript, 1 , Baseline left parenthesis, "x" , "y" , right parenthesis equals 0+d1x,y=0
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表达式17: positive "d" Subscript, 2 , Baseline left parenthesis, "x" , "y" , right parenthesis equals 0+d2x,y=0
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表达式18: positive "d" Subscript, 3 , Baseline left parenthesis, "x" , "y" , right parenthesis equals 0+d3x,y=0
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表达式19: 0.0 3 equals "s" left parenthesis, "x" , "y" , right parenthesis0.03=sx,y
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表达式20: StartFraction, left bracket, 1...3 0 , right bracket Over 20 , EndFraction equals "s" left parenthesis, "x" , "y" , right parenthesis1...3020=sx,y
