insulation from one side, and is open to an environment of $45\backslash$deg C ambient temperature an convective heat transfer coefficient of $20$ W$/$m$^2\backslash$deg C$.$ See the attached figure. $(4$ marks$)$ Find the following:

$1.$ Differential equation for steady state heat conduction with boundary conditions

$2.$ Temperature profile equation $3.$ Temperature at inner side of wall $($T$1)$

$4.$ Temperature at outer side of wall $($Ti$)$

Heating cod