学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
选出下列单词中划线部分读音不同的选项,将其序号填入题前括号内
  (   )(1) A. Forget   B. her         C. work      D. nurse
  (   )(2) A. these     B. father      C. think     D. mouths
  (   )(3) A. any       B. catch      C. black     D. stamp
  (   )(4) A. book      B. good        C. food      D. classroom
  (   )(5) A. Pens     B. teachers    C. apples    D. cats
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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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