solution by hand please

2. a)Prove that the one dimensional steady state temperature distribution for fin with uniform cross sectional area of diameter d, and length L is given by: dx2d2Tdh4h(TTs)=0 Where h is the convection heat transfer coefficient, K is the thermal conductivity of the fin material and Ts is the surrounding temperature. b) Solve the above equation with T=T0 at x=0 and T=0 at x=L