学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
听录音,选出你听到的单词或词组。(
( )(1)A.spring         B.summer       C.fall
( )(2)A.March          B.May          C.April
( )(3)A.eat breakfast  B.eat lunch    C.eat dinner
( )(4)A.7:30           B.8:30         C.9:30
( )(5)A.drinking       B.eating       C.having
( )(6)A.fly kites       B.plant trees   C.make a snowman
( )(7)A.nice           B.sweet        C.good
( )(8)A.go hiking       B.go shopping  C.go fishing
( )(9)A.go to bed      B.go to school  C.go to work
( )(10)A.first         B.second      C.third
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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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