... 4sin x cos x - sin2x ( 0 ≤ x ≤ π ) ŻE 大值、最小值( 2 ) f ( x ) = 3cos2x - 4sin x cos x - sin2 x 1 + cos 2x 1 = 3 . cos 2x 2sin2x- 2 2 - = 2 ( cos 2x ...
確定! 回上一頁