運算式 2: "y" equals cosine ( 2 ) minus left parenthesis, sin ( 2 ) ( "x" minus 2 ) , right parenthesis minus 1 half left parenthesis, ( "x" minus 2 ) squared cos left parenthesis, 2 , right parenthesis , right parenthesis plus 1 sixth left parenthesis, "x" minus 2 , right parenthesis cubed sine left parenthesis, 2 , right parenthesisy=cos(2)−sin(2)(x−2)−12(x−2)2cos2+16x−23sin2