Question

find the first six terms of the sequence. a1 = -1, an = 2 • an-1(7 points)

Answer 1

an = 2 * a(n-1)
a1 = -1
a2 = 2 * a1 = 2 * -1 = -2
a3 = 2 * a2 = 2 * -2 = -4
a4 = 2 * a3 = 2 * -4 = -8
a5 = 2 * a4 = 2 * -8 = -16
a6 = 2 * a5 = 2 * -16 = -32

Therefore, first six term are: -1, -2, -4, -8, -16, -32