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
找出错误的一项并改正。
( ) (1)Whattimedo your class begin ?
A      B                         改正:________
( ) (2)Itbeginsinabout 5:30 after supper.
A   B]                         改正:_________
( ) (3)Seeyourtomorrow.
A   B                            改正:_________
( ) (4)Pleasecomingto mybirthdayparty.
A         B                  改正:_________
( ) (5)Icancoming,too.
A    B                           改正:__________
( ) (6)TodaywasOctober first.
A    B                      改正:___________
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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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