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 Fit implicit functions

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T O P I C    R E V I E W
fliozzi Posted - 05/22/2012 : 04:54:23 AM
v8.6Sr2. 32 bits trial mode
Operating System: Windows 7 x64

Hello, is there any way to adjust implicit functions with origin? For example the full diode equation I=Io*(exp((V-I*Rs)/(n*Vt))-1).
For fit this ecuation, i use Mathematica V8. I suppose a function F(V,I)=0; in this case F(V,I)=Io*(exp((V-I*Rs)/(n*Vt))-1)-I. Now I create the trio of experimental values (xi, yi, 0) and fit the function of two variables F(V,I) for the parameters Io, Rs and n.
How I can do this in origin?

Please fit implicit function is importat in ingeniering. Please incorporate it into future releases. But broken promises. Do it. Lambert W funtion too.
Thanks.

I`am electronic engineering student.
2   L A T E S T    R E P L I E S    (Newest First)
fliozzi Posted - 05/22/2012 : 12:24:27 PM
Thanks!
Greetings.

I`am electronic engineering student.
easwar Posted - 05/22/2012 : 12:05:54 PM
Hi,

Fitting with implicit functions using orthogonal distance regression will be available in the next version.

Easwar
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