Expression 13: "y" equals "t" left brace, left brace, StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue greater than or equal to 0 : max left parenthesis, negative StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction "x" , StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction "x" minus 1 , right parenthesis , max left parenthesis, negative StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction "x" , StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction "x" minus 1 , negative max left parenthesis, negative StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction left parenthesis, "x" minus "d" , right parenthesis , StartFraction, 1 Over StartAbsoluteValue, "t" Subscript, "e" "s" "t" , Baseline , EndAbsoluteValue , EndFraction left parenthesis, "x" plus "d" , right parenthesis minus 1 , right parenthesis , right parenthesis , right brace less than or equal to 0 , right bracey=ttest≥0:max−1testx,1testx−1,max−1testx,1testx−1,−max−1testx−d,1testx+d−1≤0