This website features free Mathcad, Maple and VisSim worksheets covering a wide range of applications. Highlights include Mathcad worksheets to calculate the flow of centrifugal pumps in parallel, the principal component analysis of multidimensional data, and the pressure drop of a two-phase fluid in a pipe.
If you're a financial mathematician you'll also find worksheets for
Markowitz optimization, plotting the Efficient Frontier and calculating
the Sharpe and Sortino Ratio in the Financial Modeling section
The most-recently added worksheet demonstrates the solution of a three degree of freedom multibody system.