1.3+5.7= 1.9-0.6= 9×0.7= 2.3÷23=
0.87×0.1= 0.54+1= 6.9÷3= 0.126+0.374=
23.1×0.3= 8.7-7= 0.5÷10= 0.08×1000=
0.97-0.9= 0÷7.1= 4.25×10= 8×0.9×0.25=
2.5×4= 0.9+1.1= 100÷20= 1-0.56=
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