Test case: math rendering in examples
Details
Display equation:
$$y = \alpha + \beta X + \varepsilon$$
Multi-line equation (correctly rendered by katex only):
$$\text{Minimize } l \\ \text{ subject to } \\ \sum_{i = 1}^{I} x_i r_{ij} + y_j \geq t_j \forall j \in J \\ l \geq \frac{y_j}{t_j} \forall j \in J \\ \sum_{i = 1}^{I} x_i c_i \leq B$$