The function is .
Apply change-of-base formula : .
Rate of growth of is
.
Therefore, the rate of growth of is
.
The function is .
Rate of growth of is
.
Rewrite the function as .
Take natural logarithm on each side.
\Differentiate the function with respect to .
.
Therefore, the rate of growth of is
.
The function is .
Rate of growth of is
.
Therefore, the rate of growth of is
.
The function is .
Rate of growth of is
.
Therefore, the rate of growth of is
.
For large values of , according to the rates of growths, the function can be arranged as follows :
.
Order of functions is .