SMath Studio - A Free Mathcad Alternative

While looking for a Mathcad alternative, I stumbled upon one free alternative. It's called SMath Studio and this will come in handy as I'm refreshing my undergraduate Math. This might also be useful to students who doesn't have access to Mathcad (we've had access to it back in college), or professionals who can't afford it.

Here's the URL to it.

http://www.smathstudio.com/ 

Circuits and Electronics - MITx 6.002x

7 years after graduation, I guess it's time to refresh some of my rusted fundamental analog design knowledge. What better way to do that than enroll on MIT's experimental online course, 6.002x - Electronics and Circuits. The course will be running, free of charge, from March 5 to June 8. A certificate is also awaiting at the end of the course.

Here's the URL, by the way.

https://6002x.mitx.mit.edu/

While at it, I am also refreshing most of my Mathematics. It's also a good time to learn about Multivariable Calculus which we never had back in college.

The courses can be found at MIT Open Courseware site. I'm particularly taking the ones designated as OCW Scholar which are deemed more complete than the other Open Courseware available.

Here's the URL to OCW Scholar course.

http://ocw.mit.edu/courses/ocw-scholar/