学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.85
所属科目:小学英语
Choose the right translations.(选出下面句子中划线部分的汉语意思)?
(______) 1.?What chores does Bill do at home??A.?需要?   B.?家务?     C.?做?
(______) 2.?Call me when you’ re free.          A.?白色???   B.?免费的   C.?空闲的?
(______) 3.?I enjoy feeding my fish.             A.?享受?       B.?饲养?     C.?折叠?
(______) 4.?She invites her friends to come to her birthday party. A.?邀请?B.?欢迎?C.?希望
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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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