ok i have a new graph to create from the below in over leaf please : $$P(\eta) = \begin{cases} \frac{1}{48} (\eta - 1) (8\eta^2 - \eta - 1) & \text{if } 0 \leq \eta < \frac{1}{3} \\ \frac{(\eta - 1) (8\eta^3 - 47\eta^2 + 34\eta - 7)}{48 (\eta + 1)} & \text{if }\frac{1}{3} \leq \eta < \sqrt{2}-1 \\ \frac{271}{48} - \frac{51 \eta^2}{16} - \frac{\eta^3}{6} + \frac{-17 + 42 \eta^2 - 27 \eta^4}{3 (1 - \eta^2)^3} & \text{if } \sqrt{2}-1 \leq \eta < \frac{1}{\sqrt3}\\ \frac{1}{48} - \frac{7 \eta^2}{16} + \frac{7 \eta^3}{6} - \frac{7 \eta^4}{8} + \frac{\eta^6}{8} & \text{if } \frac{1}{\sqrt3} \leq \eta < 1\\ \end{cases}$$