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:0.64
所属科目:小学英语
读对话,选择正确的选项完成对话。
A.Where is John?
B.Can I play with him?
C.We can play the ball.
D.Is he reading?
 
E.He is watching TV.
A: ______________
B: He is in the living room.
A: ________________
B: No, he isn’t. ______________
A: _________________
B: OK. _________________
A: Great.
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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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