Given a measure space (X, A, ). Let (fn) and f be extended real-valued A- measurable functions on D A and assume that f is real-valued a.e. on D. Suppose there exists a sequence of positive numbers (En) such that 1. new En < 0. 2. Sp fn-f|du < En for every n N for some fixed p = (0, ). Show that the sequence (fn) converges to f a.e. on D. (Note that no integrability of fn, f, f on D is assumed).