学进去-教育应平等而普惠
试题
类型:选词/短语填空
难度系数:0.65
所属科目:小学英语
A. What       B. Who       C. What’s       D. Where       E. What colour

1.—______ is your friend? —Zhang Peng.
2.—______ is your pencilbox? —It’s in my bag.
3.—______ is your English book? —It’s yellow.
4.—______ in your hand? —It’s an eraser.
5.—______ is in your classroom? —Six lights, many desks...
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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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