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:0.65
所属科目:小学英语
听录音,选出你所听到的单词或短语。(听两遍)
(      ) 1. A. Chinese                         B. English                  C. Maths
(      ) 2. A. under                            B. usually                  C. umbrella
(      ) 3. A. every                            B. evening                 C. eleven
(      ) 4. A. cake                              B. lake                      C. make
(      ) 5. A. park                              B. picture                  C. panda
(      ) 6. A. try again                         B. sing again             C. every day
(      ) 7. A. do my homework             B. at home               C. do housework
(      ) 8. A. draw them                      B. love them             C. draw a boat
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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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