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
选出下列发音不同的词。
(      )1. A. name                        B. face                        C. apple   
(      )2. A. red                           B. bed                         C. she
(      )3. A. we                           B. egg                         C. he       
(      )4. A. desk                         B. three                        C. knee
(      )5. A. have                          B. that                         C. snake
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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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