Plz solve it using the software Polymath plzzz!!!!

Problem 1 Statement: Solve Problem 8.12 assuming line 3 to 4 is shutdown. Problem 2 Statement: The one-dimensional model for a tubular reactor with A Products, can be written as below: rA=Dex22CAVxCA Where, De=DispersioncoefficientofreactantA=0.01cm2/secV=Fluidflowvelocity=0.1cm/secCA=ConcentrationofreactantAx=Dimensionalongthereactor.rA=reactionrate=(kCA)k=reactionrateconstant=1.5103s1 Comp A concentration at the start of the reactor equal to 1mol/cm3 at the end of the reactor CA is minimum. This will give the following boundary condition: CA(x=0)=1dxdCA=0 If the reactor length =30cm, Obtain the steady state concentration profile