学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.94
所属科目:小学英语
听音,选出你所听到的问句的答语。
(1)A.He went to the park.
B.By bike.
C.Yes, he did.
(2)A.Last Sunday.
B.I bought some ice creams.
C.I visited my grandma.
(3)A.Two kilo of apples.
B.Half a kilo of cheese.
C.It’s cheese.
(4)A.Yes, I do.
B.No, she doesn’t.
C.She likes cheese.
(5)A.It’s mine.
B.No, it isn’t.
C.Yes, it does.
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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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