A nonlinear fitting of demo can effectively solve the problem of curve fitting

lmfit a self-contained C library for Levenberg-Marquardt least-squares minimiza.pdf
lmfit a self-contained C library for Levenberg-Marquardt least-squares minimiza2.pdf
lmfit-6.1
.........\lmfit-6.1
.........\.........\aclocal.m4
.........\.........\build-aux
.........\.........\.........\compile
.........\.........\.........\config.guess
.........\.........\.........\config.sub
.........\.........\.........\depcomp
.........\.........\.........\install-sh
.........\.........\.........\ltmain.sh
.........\.........\.........\missing
.........\.........\CHANGELOG
.........\.........\config.h.in
.........\.........\configure
.........\.........\configure.ac
.........\.........\COPYING
.........\.........\demo
.........\.........\....\curve1.c
.........\.........\....\curve2.c
.........\.........\....\Makefile.am
.........\.........\....\Makefile.in
.........\.........\....\nonlin1.c
.........\.........\....\surface1.c
.........\.........\INSTALL
.........\.........\lib
.........\.........\...\lmcurve.c
.........\.........\...\lmcurve.h
.........\.........\...\lmcurve_tyd.c
.........\.........\...\lmcurve_tyd.h
.........\.........\...\lmmin.c
.........\.........\...\lmmin.h
.........\.........\...\lmstruct.h
.........\.........\...\Makefile.am
.........\.........\...\Makefile.in
.........\.........\lmfit.pc.in
.........\.........\m4
.........\.........\..\libtool.m4
.........\.........\..\ltoptions.m4
.........\.........\..\ltsugar.m4
.........\.........\..\ltversion.m4
.........\.........\..\lt~obsolete.m4
.........\.........\Makefile.am
.........\.........\Makefile.in
.........\.........\man
.........\.........\...\lmcurve.3
.........\.........\...\lmcurve.html
.........\.........\...\lmcurve.pod
.........\.........\...\lmfit.7
.........\.........\...\lmfit.html
.........\.........\...\lmfit.pod
.........\.........\...\lmmin.3
.........\.........\...\lmmin.html
.........\.........\...\lmmin.pod
.........\.........\...\Makefile.am
.........\.........\...\Makefile.in
.........\.........\...\pod2htmd.tmp
.........\.........\ruby
.........\.........\....\inline
.........\.........\....\......\curve1_rubyinline.rb
.........\.........\....\swig
.........\.........\....\....\extconf.rb
.........\.........\....\....\lmfit-ruby.i
.........\.........\....\....\README
.........\.........\test
.........\.........\....\Makefile.am
.........\.........\....\Makefile.in
.........\.........\....\py_qr.py
.........\.........\....\test_qr.c

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