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Help with Degradation Platform

heathb

Community Member

Joined:

Feb 22, 2013

I am trying to compare three biodegradation curves in the degradation platform. I have fit the three data groups with logistic 4P formulas in the nonlinear platform, but I can't get the degradation platform to accept the formula's from the logistic models; I keep receiving the error message "invalid formula."  Any help would be much appreciated.