学进去-教育应平等而普惠
试题
类型:单选题
难度系数:0.65
所属科目:小学英语
找出画线字母发音不同的选项
(       )1.A. to                      B. mom                                           C. mother
(       )2.A. get                  B. west                                             C. seven                                      D. she
(       )3.A. tall                    B. train                                             C. rain
(       )4.A. nose                 B. no                                                  C. whose
(       )5.A. in                       B. fine                                               C. ice
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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