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
判断下列句子与所听句子是否相同,相同的打“√”,不同的打“×”。
_____) 1. This is Lily speaking.
_____) 2. Is he looking at the moon?
_____) 3. What are you doing here?
_____) 4. Dad is writing an email on the computer.
_____) 5. Are you coming here with your parents this morning?
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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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