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学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.64
所属科目:小学英语
从II 栏中选出I 栏各句的相应答语
I
(   ) 1.How often do you eat vegetables?
(   ) 2.What did you do last Sunday?
(   ) 3.How many minutes do you walk?
(   ) 4.Do you help your mother?
(   ) 5.What sports do you play?
II
A.About five minutes.
B.Three times a week.
C.I play ping-pong.
D.I cleaned my room.
 
E.Yes,I do.
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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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