1.02+0.8= 2.4-0.7= 0.75+0.25= 1-0.64=
0.5×6= 8×0.03= 0.9×100= 1.8×0.6=
9.6÷3= 0.8÷1= 4.9÷0.07= 125÷1000=
40×0.8= 2+5.1= 3.1+0.69= 2.5×4=
= 7a-3a= 1.6-0.8= 5.7÷3=
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