学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.94
所属科目:小学英语
听录音,把你听到的单词前面的字母代号填在题前括号内。
(     ) 1. A. soup                           B. spoon                    C. sports
(     ) 2. A. fifty                           B. beef                           C. fish
(     ) 3. A. chopstick                    B. chicken                    C. kitchen
(     ) 4. A. fork                           B. plate                           C. knife   
(     ) 5. A. chopsticks              B. painting                    C. hamburger
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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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