In[]:=
data=Array[{Random[],Random[]}&,2]
Out[]=
{{0.737361,0.514517},{0.960237,0.878658}}
In[]:=
function[x_]:=1+a1*x
In[]:=
FindFit[data,function[x],{a1},x]
Out[]=
{a1-0.323719}
In[]:=
g[x_]:=x^2/10
In[]:=
FindFit[data,function[x],{a1},x,FitRegularizationg]
FindFit
:The fit regularization g should be a function or named regularization.
Out[]=
FindFit[{{0.737361,0.514517},{0.960237,0.878658}},1+a1x,{a1},x,FitRegularizationg]