学进去-教育应平等而普惠
试题
类型:单选题
难度系数:0.65
所属科目:小学英语
选出不同类的一项
(       )1.A.desk                  B. mother               C. chair
(       )2.A.kite                    B. ball                 C. girl
(       )3.A.seven                 B. sofa                 C. table
(       )4.A.clock                 B. eleven             C. picture
(       )5.A.living room        B.name                 C. bedroom
(       )6.A. thirty-four            B. count              C. twenty-eight
(       )7.A. PE                     B. English              C. new
(       )8.A. student               B. teacher              C. have
(       )9.A. boy                   B. bag                    C. girl
(       )10.A. class                B. school              C.hundred
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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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