How can i echo mathematical symbols like alpha or beta

html code :

<div>
    &#931;
    &#945;
</div>

Running example here : http://jsfiddle.net/7QBaZ/

Chart of html entities: http://htmlhelp.com/reference/html40/entities/symbols.html

However, to show complex formulae,tis is not as easy as putting HTML entities to show mathematical symbols. You can find some help here to get started :

http://www.zipcon.net/~swhite/docs/math/math.html

http://www.myphysicslab.com/web_math.html