学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学英语
根据图片提示完成各个对话。
(1)
—What is the   ________  doing?
—It's   ________.
(2)
—Is the frog   ________?
—Yes, it  ________.
(3)
—What   ________  the monkeys doing?
—They are   ________.
(4)
—________ the koala bears ________ trees?
—Yes, they can.
(5)
—Is Zip   ________  an e­mail?
—________, it is.
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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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