Please provide me a detailed solution for the problem above, and do not copy past another solution from somewhere else. Thank you.

5. Prove that the following langauges are not regular (a) L = {ww : W {a,b}*} (b) L = {a"bk : n > k} (c) L = {a b ck: n+m > k >0} (d) L= {w E {a,b}* : 2na(w) = 3nb(w)} 5. Prove that the following langauges are not regular (a) L = {ww : W {a,b}*} (b) L = {a"bk : n > k} (c) L = {a b ck: n+m > k >0} (d) L= {w E {a,b}* : 2na(w) = 3nb(w)}