学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.85
所属科目:小学英语
听句子,选出你所听到的内容。
______) 1. A. toy       B. try       C. take
______) 2. A. like      B. late       C. litter
______) 3. A. take some medicine        B. clean the room        C. take a good rest
______) 4. A playing badminton          B. playing basketball       C. playing football
______) 5. A. I have a stomachache       B. I have a toothache       C. I have a headache
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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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