表达式4: "R" left parenthesis, "x" , "y" , "r" , right parenthesis equals "x" squared plus "y" squared minus "r" squaredRx,y,r=x2+y2−r2
4
表达式5: "c" Subscript, 1 , Baseline equals left brace, "R" left parenthesis, "x" , "y" plus 0.5 , 2.5 , right parenthesis greater than 0 , right brace left brace, "R" left parenthesis, "x" minus 2 , max left parenthesis, 0 , StartAbsoluteValue, "y" minus 0.5 , EndAbsoluteValue minus 3 , right parenthesis , 0.5 , right parenthesis greater than 0 , right brace left brace, "C" left parenthesis, "x" , "y" , right parenthesis less than 0 , right bracec1=Rx,y+0.5,2.5>0Rx−2,max0,y−0.5−3,0.5>0Cx,y<0
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表达式6: "c" Subscript, 2 , Baseline equals left brace, "R" left parenthesis, "x" , "y" plus 0.5 , 1.5 , right parenthesis less than 0 , right brace left brace, "C" left parenthesis, "x" , "y" , right parenthesis less than 0 , right bracec2=Rx,y+0.5,1.5<0Cx,y<0
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表达式7: "c" Subscript, 3 , Baseline equals left brace, "R" left parenthesis, "x" , "y" plus 0.5 , 2.5 , right parenthesis greater than 0 , right brace left brace, "R" left parenthesis, "x" minus 2 , max left parenthesis, 0 , StartAbsoluteValue, "y" minus 0.5 , EndAbsoluteValue minus 3 , right parenthesis , 0.5 , right parenthesis greater than 0 , right brace left brace, "C" left parenthesis, "x" , "y" , right parenthesis greater than 0 , right bracec3=Rx,y+0.5,2.5>0Rx−2,max0,y−0.5−3,0.5>0Cx,y>0
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表达式8: "c" Subscript, 4 , Baseline equals left brace, "R" left parenthesis, "x" , "y" plus 0.5 , 1.5 , right parenthesis less than 0 , right brace left brace, "C" left parenthesis, "x" , "y" , right parenthesis greater than 0 , right bracec4=Rx,y+0.5,1.5<0Cx,y>0
