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# LaTeX: Useful Commands

## Commonly Used LaTeX Commands

Here are some commands to get you started. If you'd like to insert an equation within your text, surround your equation with single dollar signs ($). If you'd like the equation to be on its own line, use double dollar signs ($$).  Formula How to type it Comments$$\approx\equiv\neq\le\ge$$\approx \equiv \neq \le \ge$$\mathbb{N}, \mathbb{Z}, \mathbb{Q}, \mathbb{R}, \mathbb{C}\aleph$$\mathbb{N} \aleph natural, integers, rational, real, complex aleph$$\gamma, \delta, \lambda\Gamma, \Delta, \Lambda$$\gamma \Gamma lowercase Greek Capital Greek$$x^22^{xy}$$x^2 2^{xy} superscript$$C_8 H_{10} N_4 O_2$$C_8 H_{10} N_4 O_2 subscript$$\frac{a}{b}$$\frac{a}{b} fraction$$\sqrt{n}\sqrt[n]{ab}$$\sqrt{n} \sqrt[n]{ab} radical (root)$$\sum_{j=0}^n\prod_{i=0}^m$$\sum_{j=0}^{n} \prod_{i=0}^m sum product$$\lim_{x \to \infty}$$\lim_{x \to \infty} limit$$\int x \, dx\int_1^5 x \, dx$\$ \int x \, dx   \int_1^5 x \, dx integral ( \, adds a space)



## Stuck?

Having trouble finding the command for the symbol you need?

Try Detexify.  This site allows you to draw a symbol with your mouse.  Then it tries to guess the symbol you want and gives you the LaTeX command.  A new version is on the way that will have more features.  Accessed 05/8/14.