\left(\frac{x^2}{y^3}\right)
 \sqrt{\frac{a}{b}}
  \frac{n!}{k!(n-k)!} = \binom{n}{k}
\lim\limits_{x \to \infty} \exp(-x) = 0
  \frac{\mathrm d}{\mathrm d x} \left( k g(x) \right)
  \int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x
  P\left(A=2\middle|\frac{A^2}{B}>4\right)
  M = \begin{bmatrix} \frac{5}{6} & \frac{1}{6} & 0 \\[0.3em] \frac{5}{6} & 0 & \frac{1}{6} \\[0.3em] 0 & \frac{5}{6} & \frac{1}{6} \end{bmatrix}
  \displaystyle\sum_{i=1}^{10} t_i
  \left( \begin{array}{c} n \\ r \end{array} \right) = \frac{n!}{r!(n-r)!}
 \[ f(n) = \begin{cases} n/2 & \quad \text{if } n \text{ is even}\\ -(n+1)/2  & \quad \text{if } n \text{ is odd} \end{cases} \]
\times \otimes \oplus \cup \cap
\alpha \beta \gamma \rho \sigma \delta \epsilon