学进去-教育应平等而普惠
试题
类型:其他计算
难度系数:0.64
所属科目:小学数学
口算下面各题
2.5+3.2=                  9.8-4.8=                    1.29-0.18=
2.26+0.9=                  8-0.82=                      0.75+0.25=
1.4+0.5=                  10.8-8.5=                    6.4+1.07=
0.55+5.5=                  1.05-0.09=                  0.6+6.45=
4.13-1.8=                  0.46+0.54=                  1.07-0.47=
1.28+0.22=                 2.4-1.9=                      0.06+1.5=
2.5-0.9=                  4.2+0.53=
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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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