Q17Long answer
A sequence a1, a2, a3 ... is defined by letting a1 = 3 and ak = 7ak–1 for all natural numbers k ≥ 2. Show that an = 3.7n–1 for all natural numbers.
A sequence a1, a2, a3 ... is defined by letting a1 = 3 and ak = 7ak–1 for all natural numbers k ≥ 2. Show that an = 3.7n–1 for all natural numbers.