学进去-教育应平等而普惠
试题
类型:单词拼写
难度系数:0.00
所属科目:小学英语
考考你:看图写单词,注意单复数奥!
1.
—How many s____________ do you have?
—I have tree.

2. I have ten r __________ in my schoolbag.

3.—How many ___________ do you have?
—I have one.

4.—What’s it?
—It’s _____________.

5. — What can you see in it?
—Some n____________.
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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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