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
朗读句子,从中找出与例词画线部分读音相同的单词。
( )1. It's fine today.
A. nice B. windy C. sixteen
( )2. Can I have some cold water, please?
A. hot B. goC. two
( )3. Shall we go to the zoo?
A. book B. look C. cool
( )4. It's sunny. Let's go shopping,
A. cucumber B. mum C. blue
( )5. How's the weather today?
A. snowy B. windowC. now
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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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