pls show all steps

5. The Reverse Barrier! Let's say a B-wave particle, moving from right to left, runs into a cliff. Do you think the wave will reflect off of it like the step barrier problem? We start with a leftmoving B wave: II=Beik1x, however, if there is a reflection then a right-moving A wave is also present in region II: II=Aeik2x+Beik1x If some of the B wave transmits then there is a left moving C wave in region I: 1=Ceikk1x Since the wavefunctions must be continuous and smooth at x=0 we have two equations: Ceik1x=Aeik2x+Beik2xC=A+B(continuous) and xCeik1x=x{Aeik2x+Beik2x}ik1C=ik2Aik2B(smooth) a. Can you solve for BA (the square root of reflection) in terms of k1 and k2 ? (10