学进去-教育应平等而普惠
试题
类型:听音判断
难度系数:0.65
所属科目:小学英语
Listen and draw “T” or “F”. (听对话,判断正(T)误(F)。)
(      ) 1. Lucy doesn’t have music.
(      ) 2. Lucy has English, French, maths and computer studies.
(      ) 3. After school she sometimes plays the piano, draws pictures and watches films.
(      ) 4. Lucy does sports after school.
(      ) 5. She doesn’t often read books after school.
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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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