学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.94
所属科目:小学英语
听录音,选出句中你听到的单词。(听两遍)
(     ) 1. A. Mr                           B. Miss                    C. my
(     ) 2. A. the                           B. this                    C. that
(     ) 3. A. tree                    B. three                    C. here
(     ) 4. A. English                    B. listen                    C. please
(     ) 5. A. book                    B. door                    C. talk
(     ) 6. A. bird                    B. ruler                    C. under
(     ) 7. A. drink                    B. milk                    C. eat
(     ) 8. A. blackboard             B. behind                    C. beautiful
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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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