temperature, . There are four commonly possible fin tip () conditions, however: the tip can be exposed to convective heat transfer, insulated, held at a constant temperature, or so far away from the base as to reach the ambient temperature.

For the first case, the second boundary condition is that there is free convection at the tip. Therefore,
:

which simplifies to
:

The two boundary conditions can now be combined to produce
:

This equation can be solved for the constants and to find the temperature

1.Previous
3.Next