Origin Ver.8 and Service Release 5(Select Help-->About Origin):
Operating System:vista
Origin Ver 8. and Service Release 5 (Select Help-->About Origin):
Operating System:
Origin Ver8. and Service Release 5 (Select Help-->About Origin):
Operating System:vista
Hi, I have a series number (x,y), I need to fit the data to get some constants. However, it is impossible to get an expression like y=f(x). the equation like
y=A1*x1/A +A2*x1^4/((exp(-(A3+A4*x))/RT)*A)
A,R,T are known constant
A1,A2,A3,A4 are unknown constant, and to get them by fitting the data
x1 is a function of x, an is the root of the equation
4*x1^4/(A-x1)=exp(-(A3+A4*x)/RT)
obviously, cannot get an expression like x1=g(x) due to the high order the equation. Thus numerical curve fitting is need.
however, how to use numerical and nonlinear fitting in in origin?
thanks
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numerical and nolinear curve fitting
Posted - 07/31/2009 : 12:44:17 PM
