| T O P I C R E V I E W |
| Hoppala |
Posted - 11/14/2014 : 03:14:48 AM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 9.1G
Operating System: Win 7
Hello community!
I have a problem setting a constraint for a user defined non-linear curve of the formula
y = A0 + A1*x + A2*x^2 + A3/x.
I need the curve to fulfill the condition
y(298) = 0 (or 0 = A0 + A1*298 + A2*298^2 + A3/298 )
but I have no idea how to do that.
All I found so far, only deals with linear constraints, e.g. A0 < 0 etc. Thanks in advance for any help. |
| 2 L A T E S T R E P L I E S (Newest First) |
| Hoppala |
Posted - 11/14/2014 : 05:25:50 AM
Oh my gosh, that was TOO easy. I never thought of that.
Thank you very much! |
| Echo_Chu |
Posted - 11/14/2014 : 04:02:01 AM
Hi,
This in fact still a linear constraint. You can look at the tutorial below for steps of the similar problem.
http://www.originlab.com/doc/Tutorials/Fitting-FixThroughPoint#Use_Linear_Constraint
Echo
OriginLab Corp.
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