学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.40
所属科目:小学英语
根据首字母拼写单词,完成短文。
Jack's father would like to be a p________. He can make the city a safe place. Every day he goes around the city. After work he often sits at his personal c________ to talk to his net(网) f________. He finds it interesting to make friends with t________. He also finds some information about policemen's work. His police s________ is not far away from his housing e________. Sometimes he walks t________. He loves his job b________ he can help people in different ways.
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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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