学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.85
所属科目:小学英语
选出你在句子中所听到的短语。
_____) 1. A. listen to English            B. speak English             C. read English
_____) 2. A. have an English party        B. stay at home              C. had a party
_____) 3. A. on the right                B. on the left                 C. turn left
_____) 4. A. by bike                   B. by bus                    C. by subway
_____) 5. A. Tower Bridge              B. CN Tower                 C. Beihai Park
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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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