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| 13.4﹣8=________ | 5.6+4=________ | 23+4.7=________ | 10﹣2.3=________ |
| 10﹣2.3=________ | 13.4﹣8=________ | 7.5×4=________ | 2.3×4×0=________ |
| 0.001×40=________ | 3.05×5=________ | 2.3×4×0=________ | 0.6﹣0.23=________ |
| 0.34+0.45=________ | 0.06×0.7=________ | 0.05×1.6=________ | 0.6﹣0.23=________ |
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
