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
读下面句子并判断对(√)错(×)。
_____) 1. Shanghai is the capital city of China.
_____) 2. The flag of China is red and blue.
_____) 3. We speak English in China.
_____) 4. Tian'anmen Square is in Beijing.
_____) 5. The map of China looks like a rooster (公鸡).
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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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