Expression 7: "m" equals length left parenthesis, "l" , right parenthesism=lengthl
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Expression 8: StartFraction, left parenthesis, "x" minus "S" . "x" , right parenthesis Over "S" . "x" minus "E" . "x" , EndFraction left parenthesis, "S" . "y" minus "E" . "y" , right parenthesis plus "S" . "y" equals "y"x−S.xS.x−E.xS.y−E.y+S.y=y
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Expression 9: StartFraction, left parenthesis, "x" minus "l" left bracket, "p" , right bracket . "x" , right parenthesis Over "l" left bracket, "p" , right bracket . "x" minus "l" left bracket, "p" plus 1 , right bracket . "x" , EndFraction left parenthesis, "l" left bracket, "p" , right bracket . "y" minus "l" left bracket, "p" plus 1 , right bracket . "y" , right parenthesis plus "l" left bracket, "p" , right bracket . "y" equals "y"x−lp.xlp.x−lp+1.xlp.y−lp+1.y+lp.y=y
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Expression 10: "p" equals 3p=3
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Expression 11: 1 greater than "f" left parenthesis, "x" , "y" , right parenthesis1>fx,y
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Expression 12: "f" left parenthesis, "E" . "x" , "E" . "y" , right parenthesisfE.x,E.y
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Expression 13: "E" equals left parenthesis, negative 1.0 4 , negative 0.2 7 , right parenthesisE=−1.04,−0.27
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Expression 14: polygon left parenthesis, "S" , "E" , right parenthesispolygonS,E