Text widget usage http://codex.wordpress.org/Plugins/WordPress_Widgets#Using_Text_Widgets http://faq.wordpress.com/2006/12/24/using-the-text-widget/
to post sourcecode: http://faq.wordpress.com/2007/09/03/how-do-i-post-source-code/ to put Math or Equation: http://faq.wordpress.com/2007/02/18/can-i-put-math-or-equations-in-my-posts/
test
to post sourcecode:
http://faq.wordpress.com/2007/09/03/how-do-i-post-source-code/
to put Math or Equation:
http://faq.wordpress.com/2007/02/18/can-i-put-math-or-equations-in-my-posts/