Write the recursive formula for the geometric sequence.
a1 = -2 a2 = 8 a3 = -32
A. an = -4 + an-1
B. an = -2 + an-1
C. an = -2 • an-1
D. an = -4 • an-1
8/ −2 = −4
−32 / 8 = − 4 ......... so....it appears that the ratio between terms = − 4
So.....
D. an = -4 • an-1 is corrrect
