知识问答
最佳答案:arcsin0 = 0,arcsin (1/2) = π/6,arcsin(√2/2) = π/4,arcsin(√3/2) = π/3,arcsin 1 =
最佳答案:一般在一个周期内取5点:如y=sin2x, 取:2x=0,π/2,π,3π/2,2π,时,相应y=0,1,0,-1,0为画的准确些,可取9点:2x=0,π/4,