#a function to print the first n terms of the Fibonacci series
def fibonacci(n):
    a, b = 1, 0
    for i in range(1, n):
        a, b = a + b, a
        print b

#a recursive function to calculate factorials
def factorial(n):
    if n == 1:
        return 1
    else:
        return n * factorial(n - 1)

Inserting raw code is as simply a matter of enclosing your code with
code code code

Be sure to put ‘single quotes’ around language you choose. The source code tags support most of the major languages:

• cpp
• csharp
• css
• delphi
• html
• java
• jscript
• php
• python
• ruby
• sql
• vb
• xml

The equation was generated by fetching code directly from CodeCogs site. It boils down to simply inserting the HTML tags for images referencing the CodeCogs site in the URL as such:

< img src="http://www.codecogs.com/eq.latex?\int_{-\infty }^{\infty }e^{-x^{2}} dx = \sqrt{\pi }"/ >

You simply have to replace the text in boldface with whatever you want.

For example, to write , simply replace the boldface text with e = mc^{2}

To write, , use \frac{1}{\sqrt{2 \pi}}

Enjoy.