Machine Design

Free math software

Mathcad Express, including the full capabilities of mathematical software Mathcad Prime 2.0, is free for a 30-day trial. After the trial period ends, users may continue to use the limited features of Mathcad Express. The free software contains messages with information on features, training, tips and tricks, as well as watermarks on worksheets.
PTC, 140 Kendrick St., Needham, MA 02494, (781) 370-5000,
www.ptc.com

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