导出 (c)'=0 (xm)'=mxm-1 (sinx)'=cosx (cosx)'=-sinx (a")'-a*Ina (e)'=e (I08。x= xIna (Inxy'=I x 例求曲线y=sinx在x=π/3处的切线及法线 方程c ′ = 0)( 1 )( − ′ = m m mxx ′ = cos)(sin xx aaa xx ′ = ln)( ′ = −sin)(cos xx xx )( ′ = ee 1 (log ) ln a x x a ′ = 导出 1 (ln ) x x ′ = 例 求曲线y＝sinx 在x =π/ 3 处的切线及法线 方程