Mathcad Express

 

Feature Comparison
Feature Comparison

PTC has announced the release of Mathcad Express.  They

“Mathcad Express is a free version of Mathcad that allows any user to utilize some selected features of Mathcad Prime 2.0, for an unlimited time.”

“Mathcad Express does include the full capabilities of Mathcad Prime 2.0 for 30 days, for free. After the 30 day period has ended, you may continue to use the limited functionality of Mathcad Express as long as you like — the Mathcad Express license will never expire.”

You can see the difference between Mathcad Prime 2.0 and Mathcad Express in the table on the download page.

 

 

Solve Differential Equations with Wolfram Alpha

Wolfram Alpha now solves differential equations with step-by-step solutions!  They describe the new feature accordingly:

Wolfram|Alpha has become well-known for its ability to perform step-by-step math in a variety of areas. Today we’re pleased to introduce a new member to this family: step-by-step differential equations. Differential equations are fundamental to many fields, with applications such as describing spring-mass systems and circuits and modeling control systems.

From basic separable equations to solving with Laplace transforms, Wolfram|Alpha is a great way to guide yourself through a tough differential equation problem.

See examples and more on the Wolfram Alpha Blog.

Wolfram|Alpha – Plotting Functions and Graphs in Wolfram|Alpha

Wolfram|Alpha - Plot
Wolfram|Alpha - 3D Plot (Credit: Wolfram|Alpha)

The Wolfram|Alpha blog has published some information on plotting functions with Wolfram|Alpha.  The plots come out quite nice whether 2D, 3D, or contour, and you don’t need to install any software to do some quick plots.

Plotting Functions and Graphs in Wolfram|AlphaMay 17, 2011Plotting functions in the Cartesian plane is such a simple task with Wolfram|Alpha: just enter the function you are looking to graph, and within seconds you will have a beautiful result. If you are feeling daring, enter a multivariate function, and the result will be a 3D Cartesian graph. Wolfram|Alpha is certainly not limited to Cartesian plotting; we have the functionality to make number lines, 2D and 3D polar plots, 2D and 3D parametric plots, 2D and 3D contour plots, implicit plots, log plots, log-linear plots, matrix plots, surface of revolution plots, region plots, list plots, pie charts, histograms, and more. Furthermore, in Wolfram|Alpha we can generate specialized plots for illustrating asymptotes, cusps, maxima, minima, inflection points, saddle points, solutions of ordinary differential equations, poles, eigenvalues, series expansions, definite integrals, 2D inequalities, interpolating polynomials, least-squares best fits, and more. Let’s take a look at the plotting functionality in Wolfram|Alpha, some of which is newly improved!We will start simple with 2D Cartesian plots.

via Wolfram|Alpha Blog : Plotting Functions and Graphs in Wolfram|Alpha.