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This is a re-post, augmented to demonstrate the Mathcad 14 bug if you get red at the top of the work sheet.
jmG
Jean,
Nice worksheet very explanatory. Correct the root function does turn red in 14 - "The 2-argument form of function "root " is a numerical tool.
Mike
Yes, root is inapplicable in symbolical calculations (MC14).
Viktor
