Post date: Aug 6, 2016 4:20:06 PM
PTC Mathcad Express is the free-for-life math software that helps students keep a practical digital notebook. By taking advantage of its simple and easy to use interface, students can create a "smart" digital notebook that performs live calculations. Need to change a variable? Change it once and the remainder of the notebook will automatically update.
Mathcad Solve Linear Equations
Mathcad Solving Parabolic Equations
you will need to create a free PTC account and have flash on your device
http://learningexchange.ptc.com/tutorials/by_product/ptc-mathcad/product_id:4