First we rewrite the expression correctly: tn = ((-1) ^ n) * (n) We now look for each of the terms: t1 = ((-1) ^ 1) * (1) = - 1 t2 = ((-1) ^ 2) * (2) = 2 t3 = ((-1) ^ 3) * (3) = - 3 t4 = ((-1) ^ 4) * (4) = 4 The first four terms of the sequence are then: -1, 2, -3, 4 Answer: B. -1, 2, -3, 4
