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

### Configuration

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

in your theme `_config.yml`

file.

1 | # Plugins |

For further MathJax configurations, please edit

:

1 | document.addEventListener('DOMContentLoaded', function () { |

### TeX and LaTeX input

Attention: 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 may be transformed to`tag by Markdown interpreter and this will interfere with MathML notation. Please write all MathML inline.`

##### Input

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

##### Result

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

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