学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
判断下列句子是否正确。正确的打“√”,如有错,打"×",写出正确的句子。
(1)I do my homework now. ()                   
(2)Zhangpeng is 4 cm tall than Mike. ()                   
(3)How do you feel ? I feel sad. ()                   
(4)Did she her homework last night ? ()                   
(5)My apple is biger than yours. ()                   
(6)Lisa likes playing piano. ()                   
(7)My hobby is collect stamps. ()                   
(8)Do she teach English? ()                   
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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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