学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
听短文,判断所给句子是否正确,用√或×表示 (听两遍)
(1)This is Ben’s classroom.
(2)The classroom is big and bright.
(3)There is a TV near the window.
(4)There are twenty-nine students in Ben’s class.
(5)There are some books and copybooks in the bookcase.
(6)Miss Wang is a good teacher.
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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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