Change of Variables

  • Sometimes non-linear fit functions (e.g. g(t)=a1ea2t ) can be transformed into a linear fit with a change of variables:

logg(t)=loga1+a2t=c1+c2t - Another example, the power law yf(t)=a1ta2 can be transformed with a log-log transformation into a linear form:

logy(loga1)+a2(logt)