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,选出你所听到的图片或单词。
(     ) 1. A.                             B.                            C.
(     ) 2. A.                             B.                            C.
(     ) 3. A.                             B.                             C.
(     ) 4. A.                             B.                            C.
(     ) 5. A.                             B.                            C.
(     ) 6. A. father                 B. mother                      C. brother
(     ) 7. A. morning                      B. afternoon                  C. evening
(     ) 8. A. friend                         B. family                      C. father
(     ) 9. A. class                           B. sister                       C. Miss
(     ) 10. A. he                            B. she                           C. I
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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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