学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
Ms Wang: 1.
Students: Good afternoon, Ms Wang.
Ms Wang: 2.
Student 1: It’s a pen.
Ms Wang: 3.
Student 2: Yes, it is.
Ms Wang: Is it a cat?
Student 3: No, it isn’t. 4.
Ms Wang: 5.
Student 4: It’s in the black bag.
A.It’s a kite.
B.Good afternoon, boys and girls.
C.What’s that?
D.Where’s the book?
E.Is it a black bag?
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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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