学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学数学
算一算,比一比,在括号里填上“>”“<”或“=”.
15-7(      )7                                      74 - 70(      )70                              8+7(      )16
13-9(      )5                                      6+70(      )77                                   40+5(      )45
20 -5(      )30-20                         30+4(      )70-20
68-20(      )68+20                       45+0(      )45-0
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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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