学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
阅读对话并判断句子对错,对的打“√”,错的打“×”。
A:Hi!Amy!
B:Hi!Sam!
A:Where's my pen?
B:I don't know.Is it in your desk?
A:No,it isn't.
B:Is it in your hat?
A:Yes,it is.Thank you.
B:You are welcome.
(  )1.The pen is in the desk.
(  )2.The pen is in the hat.
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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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