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Mathcad version 4.0 Release Date, is it really February 29th, not the 28th?
Mathcad Prime 4.0: some new updates
According to this post Re: Using Prime 3.0, the determinant function does not handle a matrix with complex numbers. Don't how to fix it. is March 6th next week.
Lo and behold, they're offering to sell Prime 4.0 on the web store as of 1:17 PM EST (USA)
