学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.85
所属科目:小学英语
Listen and circle.听一听,圈出你所听到的选项。
( )(1)Look at my new _________.
A.box                 B.bag                C.friend
( )(2)The kangaroo can _________.
A.jump                B.kick                C.draw
( )(3)Show me the letters “_________”.
A.ADE                B.mnl                 C.lma
( )(4)I have _________kites.
A.four                B.fifteen             C.fourteen
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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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