学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
找出下列每组单词中不同类的词,把其字母编号写在题前的括号内
(1)A. rain       B. sunny       C. windy
(2)A. had        B. said        C. think
(3)A. smell     B. taste      C. salty
(4)A. warm       B. cloud      C. dry
(5)A. season    B. autumn      C. winter
(6)A. bowl      B. plate      C. pancake
(7)A. hungry     B. healthy    C. finish
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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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