[−54,54]\left[-\frac{5}{4}, \frac{5}{4}\right][−45,45]
R−(−54,54)\mathbb{R}-\left(-\frac{5}{4}, \frac{5}{4}\right)R−(−45,45)
[−45,45]\left[-\frac{4}{5}, \frac{4}{5}\right][−54,54]
R−(−44,45)\mathbb{R}-\left(-\frac{4}{4}, \frac{4}{5}\right)R−(−44,54)