学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
选择合适的答语,将答案填在题前括号里。
(    )(1)Can he play football well?           
(    )(5)You are a good football player.          E. Thank you.
A.Yes, she can.( )(2)Is he good at basketball?B.Yes, I am.( )(3)Are you a good goalkeeper?C.No, he isn’t.( )(4)Can she catch the ball well?D.Yes , he can.
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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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