Can One use mathematica or maple online? Is it possible to use some of these algebra packages online ?
I have some matrices that I would like to know the characteristic polynomial of.
Where could I send them to get a nicely factorised answer ?
My PC is very slow & it would be nice to use someone elses super powerful computer !
Any suggestions 

You also have pieces of Maple online here: 
- via icons: http://www.maplesoft.com/products/StudentApps/index.aspx
- via list: https://maple.cloud/
