学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.65
所属科目:小学英语
对话小高手,判断下面对话是()否()合适
________)1.--How do you do?   
--Not at all.  
________)2.--Glad to meet you.
--Glad to meet you, too.
________)3.--Thank you.         
--That's OK.                      
________)4.--I'm not good at maths.
--Not bad.
________)5.--Glad to see you again.                
--Me too.                           
________)6.--I can help you.
--Thank you.
________)7.--How are you?                         
--Fine, thank you                     
________)8.--What about you?
--Not bad.
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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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