$apr^4$ $\mathrm{beta}(pr-\mathrm{alpha}(r-\mathrm{r0})^2\mathrm{ur0}+m)$ $(r-\mathrm{r1})\mathrm{ur1}$ $\frac{y-\mathrm{x1}}{\mathrm{t1}}$ $\frac{y-\mathrm{x1}}{\mathrm{t1}}$ $k(1-e^{-(dz)})\mathrm{uz}$ $\frac{q-\mathrm{x2}}{\mathrm{t2}}$ $\frac{\mathrm{x2}-\mathrm{x3}}{\mathrm{t2}}$ $\mathrm{x3}\mathrm{phi}$ $\begin{cases}0 & \text{if $r< 0.25$}\\ 0 & \text{if $r> 2$}\\ 1-1.3061225(r-1.125)(r-1.125) & \text{otherwise}\end{cases}$ $\begin{cases}1 & \text{if $r> \mathrm{r0}$}\\ 0 & \text{otherwise}\end{cases}$ $\begin{cases}1 & \text{if $r> \mathrm{r1}$}\\ 0 & \text{otherwise}\end{cases}$ $\begin{cases}1 & \text{if $z> 0$}\\ 0 & \text{otherwise}\end{cases}$ $\frac{f-h}{\mathrm{t4}}$