What is the value of the following sum, where T = (-6, 0, 3, 9, 13, 27}: sigma-j sum r (I + 3/3) Find a closed formula for the nth term of the sequence generated by the recurrence relation f_n = t + 2f_n - 1 where n is a nonnegative integer, and assuming that the f_C = a where a is an integer. Find the Boolean product phi of the zero-one matrices A and B where: A = [1 1 0 0 1 0 0 0 1] and B = [1 0 0 0 1 1 0 1 1]