If a function of this form $f(x)=b\cdot a^x$ is called an exponential function, then is the function $g(d)=13.4\cdot \ln(d)-21.8$ also exponential?
If yes why?
If a function of this form $f(x)=b\cdot a^x$ is called an exponential function, then is the function $g(d)=13.4\cdot \ln(d)-21.8$ also exponential?
If yes why?
It is $f(x)=a^{\log_a (b)+x}$ provided $a\ne0, a>0$ which is clearly not an exponential function.
No, it's a transformation of the natural log function, which is the inverse of the exponential.