学进去-教育应平等而普惠
试题
类型:书面表达
难度系数:0.64
所属科目:小学语文
中国的汉字有悠久的历史,中华民族的传统节日也很有意思。端午节划龙舟、吃粽子,中秋节吃月饼、赏明月,春节吃汤圆、吃团年饭、放鞭炮、看春节联欢会、得压岁钱……选一个让你最开心的节日写一写。写好以后,同学之间交换着读一读,改一改。相互分享快乐。
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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

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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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