- #1
mhill
- 189
- 1
hi, there my question is let's suppose we have the magnetization (M) versus the applied field (H) as
[tex] M(H,T)= \sum _{n=1}^{N} W(x_i ) (x_i ) Lang (H.A.x_{i}/T) [/tex]
here 'A' is a constant 'T' is the temperature of system Lang(x) is the Langevin function coth(x)-1/x ,
My problem is how to use a curve fitting algorithm to solve the problem ,i am working under the assumption that [tex] W(x_i) [/tex] i=1,2,3,...,N is a log normal distribution depending only on the value x_i
my curve fitting program is just 'Origin 7' i need the algorithm to curve-fitting to a certain given distribution W(x) thanks.
[tex] M(H,T)= \sum _{n=1}^{N} W(x_i ) (x_i ) Lang (H.A.x_{i}/T) [/tex]
here 'A' is a constant 'T' is the temperature of system Lang(x) is the Langevin function coth(x)-1/x ,
My problem is how to use a curve fitting algorithm to solve the problem ,i am working under the assumption that [tex] W(x_i) [/tex] i=1,2,3,...,N is a log normal distribution depending only on the value x_i
my curve fitting program is just 'Origin 7' i need the algorithm to curve-fitting to a certain given distribution W(x) thanks.