Expression 3: "f" left parenthesis, "x" , "y" , right parenthesis equals cosine left parenthesis, cos left parenthesis, "x" minus "T" , right parenthesis plus 2cos left parenthesis, "y" minus StartAbsoluteValue, sin left parenthesis, "x" minus "T" , right parenthesis , EndAbsoluteValue , right parenthesis , right parenthesisfx,y=coscosx−T+2cosy−sinx−T
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Expression 4: "f" left parenthesis, "L" minus 2 "A" , 2 "L" plus "A" , right parenthesis less than or equal to 0fL−2A,2L+A≤0
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Expression 5: "L" equals 6natural log left parenthesis, StartRoot, left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" , right parenthesis squared , EndRoot , right parenthesisL=6lnx2+y2
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Expression 6: "A" equals 6arc tangent left parenthesis, "y" , "x" , right parenthesisA=6arctany,x