学进去-教育应平等而普惠
试题
类型:看图题
难度系数:0.65
所属科目:小学英语
根据图片写单词完成句子。
1.I _______ _______ ______ yesterday.
2.-What did he do yesterday evening?
-He _______ ______ _________.
3.I ________ _________ __________ with my parents last night.
4.-What did your brother do last Friday?
-He _______ ___________.
5.I _______ _______ _________  yesterday.
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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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