学进去-教育应平等而普惠
试题
类型:排序题
难度系数:0.65
所属科目:小学英语
A. Yes, we live near Amy and Sam.
B. Hello, Lingling.
C. I’m fine, thank you. You’re back from China.
D. No, we came back last Sunday. This is our friend, Lingling.
E. Hello, John. How are you?
F. Yes, we are at home.
G. Hi, John. Do you live in London too?
H. Did you come back yesterday?
E (_____)(_____) H (_____) B (_____) A
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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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