学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
看图,选择合适的对话。
1.        2.          3.    
(______)                 (______)               (______)
4.           5. 
(______)                 (______)
A.—What’s this?—It’s a bear.
B.—Have some juice.—Thank you.
C.—Mum,this is Mike.
—Nice to meet you.
—Nice to meet you,too.
D.—How old are you?—I’m six.
E.—How many balloons?—Five.
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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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