学进去-教育应平等而普惠
试题
类型:仿写句子
难度系数:0.85
所属科目:小学英语
例: teacher; tall
This is my teacher. She is very tall.
1. mother; nice
This is ________. She is very ________.
2. father; cool
This ________ my ________. He is ________ ________.
3. sister; shy
This is ________ ________.  She is ________ ________.
4. brother; naughty
This ________ ________ ________. He ________ ________ ________.
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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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