学进去-教育应平等而普惠
试题
类型:其他计算
难度系数:0.85
所属科目:小学数学
算一算
3+4=                           9-5=                       4+6=
0+8 =                       10-7=                     5+2 =
6-0=                        7+2=                       14-4=
5+6=                           12-6=                       8+8=
11-7=                         9+5=                         14-5=
7+8=                           13-10=                      6+8=
15-9=                         7+7=                         12-8=
9+9=                           15-5=                       6+6=
2+2+6=                      7+3+4=                    13-6-7=
8+6-4=                      10-3+2=                  5-4+9=
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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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