The rate of change of population of bacteria is
.

Apply integral on each side.
\

Let
.
Apply derivative on each side with respect to
.


.
Substitute
and
in
.



Substitute
.
.
The equation of population is
.
The initial population of bacteria is
.
Substitute
in
.




Substitute
.
.
Substitute
in
.
.
The population of bacteria at time
is
.
Find the population of bacteria at time
.
Substitute
in
.







.
.
The population of bacteria at time
is
.
The population of bacteria at time
is
.
The population of bacteria at time
is
.