Expression 18: left parenthesis, "x" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis , "x" Subscript, 2 , Baseline left parenthesis, "t" , right parenthesis , right parenthesisx1t,x2t
domain t Minimum: negative 100−100
less than or equal to "t" less than or equal to≤t≤