please explain how to do this. I am so confused since the number of nodes isn't specified what to do.

2.94 A plane wall is L=10cm thick with conductivity k=2.0W/mK. The wall is adiabatic on one side (x=0) with the other side (x=L) exposed to a fluid (Tf=20C) with heat transfer coefficient h=100W/m2K. There is a volumetric thermal generation within the wall that varies with position according to: g=1+bxa where a=1105W/m3 and b=10m1 (a) Develop a numerical model of the situation and plot the temperature as a function of position. (b) Verify that your model has a sufficient number of nodes. (c) Verify that your model matches an analytical solution in the limit that generation is a constant (i.e., b=0 )