積分 : ¶axdx = ¶elnax dx = ¶exlnadx = ex lna lna +c = ax ... cos. 1 x x. +. = sin2. 2sin cos x x x. = sin2x = 1. 2 − 1. 2 cos 2x cos2x = 1. 2 + 1. 2 cos 2x.
確定! 回上一頁