学进去-教育应平等而普惠
试题
类型:单选题
难度系数:0.94
所属科目:小学英语
选出画线部分发音不同于其他的一项。
( ) 1. A. face                                       B. cat                                          C. gate
( ) 2. A. milk                                       B. ice                                          C. rice
( ) 3. A. desk                                       B. she                                          C. dress
( ) 4. A. fan                                        B. bag                                          C. class
( ) 5. A. white                                     B. six                                          C. picture
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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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