学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听录音,选择正确的选项。
(     ) 1. A.                B.                C.
(     ) 2. A.                  B.                          C.
(     ) 3. A.                  B.                   C.
(     ) 4. A.                   B.                        C.
(     ) 5. A.                   B.                  C.
(     ) 6. A.                B.                          C.
(     ) 7. A.               B.                       C.
(     ) 8. A.                   B.              C.
(     ) 9. A.                          B.                       C.
(     ) 10. A.                   B.             C.
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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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