plz show the full process with clear hand writing

P14 Consider a random walk on the integers in [0, n| where on each move. one moves right with probability p 7E 1 / 2 and left with probability q = 1 p. The endpoints 0 and n are absorbing. Show that the probability a, that a walk starting at 2:0 = k is absorbed at 0 is k n 1 _ .1 (,) (,) 1| _ .1 1 (,) Challenge: What is Hm...\" at in the cases 42/13 > 1 and of]: