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Define the functions in prolog
The whole question is define the following predicates in prolog: 1, lastelem(L,X) which is true only when X is the last element in the list L. 2, replast(L,X,M) which is true only when M is the same as L except(possibly) for the last element which is X for M. 3, exchfal(L,M) which is true only...
