学进去-教育应平等而普惠
试题
类型:其他
难度系数:0.65
所属科目:小学英语
读一读,把划线字母相同且读音相同的单词连起来。
1. rain                                 a. quarter
2. warm                              b. train
3. draw                              c. bread
4. head                              d. skirt
5. girl                                 e. saw
6. school                           f. good
7. book                              g. afternoon
8. now                              h. back
9. black                              i. knife
10. know                           j. how
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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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