学进去-教育应平等而普惠
试题
类型:句图匹配
难度系数:0.85
所属科目:小学英语
A.    B. C.    D.    E.
1.—Where is your book? (     )
—The book is in the bag.
2.Look at the dog. It has a long body. (     )
3.—This is a giraffe. (     )
—Wow! It’s so tall.
4.—How many apples can you see? (     )
—I can see thirteen.
5.—Have some strawberries, please. (     )
—Thank you.
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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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