2+0.5= 11×50= 8.4﹣3= 6.3+15=
1.4+1.9= 37×40= 309÷3= 10﹣8.6=
9.6﹣3= 210×30= 2.9+1.1= 13.2﹣5.2=
1﹣0.9= 13×13= 50×60= 8﹣0.7=
3.8+1.5= 32×8= 426÷6= 71×40=
0.8+0.6= 7.3﹣0.6=
同类型试题
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
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