Math Rendering Test Inline Math The quadratic formula is x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}x=2a−b±b2−4ac. Display Math ∫−∞∞e−x2dx=π\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}∫−∞∞e−x2dx=π Matrices [abcd]\begin{bmatrix} a & b \\ c & d \end{bmatrix}[acbd] Aligned Equations ∇⋅E=ρε0∇⋅B=0\begin{aligned} \nabla \cdot \mathbf{E} &= \frac{\rho}{\varepsilon_0} \\ \nabla \cdot \mathbf{B} &= 0 \end{aligned}∇⋅E∇⋅B=ε0ρ=0 Summations ∑i=1ni=n(n+1)2\sum_{i=1}^{n} i = \frac{n(n+1)}{2}i=1∑ni=2n(n+1)