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Surface creation under mathematical formulas

Question asked by Oleg Bezyaev on Apr 27, 2011
Latest reply on Apr 27, 2011 by Oleg Bezyaev

Somewhere at a forum there were references to the program which was able to build surfaces under mathematical formulas, I have forgotten the name. It not MATHCAD or MATHLAB))) the program free, at it still was possibility of export of surfaces in WRML. Somebody can prompt references to a site or to downloading?