学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.64
所属科目:小学英语
按要求改写句子。
[[QOrDeR]]We should drive so much.(改为否定句)
We                so much.
【小题2】Wood comes from trees.(改为一般疑问句)
wood       from trees?
【小题3】People should save energybecause there’s not too much energy on Earth.(对划线部分提问)
people       energy?
【小题4】Most of energy comes from coal and oil.(对划线部分提问)
Most of energy ________  __________?
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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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