Data fitting using implicit functions and infinite series
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How to use this equation for data fitting？
J/J∞ is dependent variable，t is independent variable，L, DL is constant，and k is parameters to be fitted.
回答（1 个）
Depending on the number of series terms you want to use in the evaluation of J, determine the roots of the nonlinear equation tan(...) = ... (e.g. using "fzero" several times).
Then use the k-value from the solver (e.g. lsqcurvefit) to evaluate the series at your measurement data vector t and return the calculated values for J (or J/J_inf) to the solver.
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