$$f\left(a\right)=\frac{1}{2\pi i}{\oint}_{\gamma}\frac{f\left(z\right)}{z-a}dz$$

## Configuration

To enable MathJax support, just set `plugins.mathjax = true`

in your theme `_config.yml`

file.

1 | # Plugins |

For further MathJax configurations, please edit `<theme folder>/layout/plugin/scripts.ejs`

:

1 | <% if (theme.plugins.mathjax) { %> |

## TeX and LaTeX input

Please be noted that when you write Tex/LaTeX in Markdown files, you need to use escape characters to prevent certain signs from being processed by Markdown interpreter.

#### Input

1 | When $a \ne 0$, there are two solutions to \\(ax^2 + bx + c = 0\\) and they are |

#### Result

When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

## MathML input

Attention: please be noted that newline characters will be transformed to

`<br>`

tag by Markdown interpreter and this will interfere with MathML notation. Please write all MathML inline.

#### Input

1 | When<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>≠</mo><mn>0</mn></math>, there are two solutions to <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><msup><mi>x</mi><mn>2</mn></msup><mo>+</mo> <mi>b</mi><mi>x</mi><mo>+</mo> <mi>c</mi> <mo>=</mo> <mn>0</mn></math> and they are |

#### Result

When$a\ne 0$, there are two solutions to $a{x}^{2}+bx+c=0$ and they are

$$x=\frac{-b\pm \sqrt{{b}^{2}-4ac}}{2a}\text{.}$$

## AsciiMath input

Attention: please be noted that when you write AsciiMath in Markdown files, you need to use escape characters to prevent certain signs from being processed by Markdown interpreter.

#### Input

1 | When \`a != 0\`, there are two solutions to \`ax^2 + bx + c = 0\` and they are<p style="text-align:center">\`x = (-b +- sqrt(b^2-4ac))/(2a) .\`</p> |

#### Result

When `a != 0`, there are two solutions to `ax^2 + bx + c = 0` and they are

`x = (-b +- sqrt(b^2-4ac))/(2a) .`