学进去-教育应平等而普惠
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类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
glasses, home, bedroom, window, teacher, cap, bed, pencil box, doctor, computer

Welcome to my 1. . This is my 2. . You can see a 3. and a 4. . This is my study. Look! The kite is near the 5. . I like red 6. , blue 7. and green 8. . My mother is a 9. . And my father is a 10. . I love my family.

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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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