Wolfram Alpha Pro provides online access to the kinds of computations you might do in Mathematica.
You can access Wolfram Alpha Pro at http://www.wolframalpha.com.
For full functionality, you'll need a Wolfram ID and subscription to Wolfram Alpha Pro. Here are the steps involved.
- If you don't already have a Wolfram ID, create one using your Berkeley email address as your ID at this link (also available through https://software.berkeley.edu/
- Fill out the Wolfram Pro subscription request form on the page you are redirected to.
- Follow the instructions provided to confirm your Berkeley email address in the email sent to you.
Once you have this set up, you should be able to use your Berkeley email and the password you just set up to sign in to Wolfram Alpha from http://www.wolframalpha.com.