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
看对话,判断正误:正确的写“T”,错误的写“F”。
1.They are black.
2.It is brown.
3.There are seven white cars.
4.I lost my cat, it’s brown.
5.There are two yellow books.
Questions:
1.They are       .                                 (     )
2.It is        .                                   (     )
3.They are seven        cars.                      (     )
4.I lost my cat, it’s       .                     (     )
5.There are two       books.                        (     )
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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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