Question

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

Answer 1

\[common~ ratio~ of~ G.P. r=\frac{ a2 }{ a1 }=\frac{ 8 }{-2 }=-4\]
each term is obtained by multiplying previous term by -4

Answer 2

. or +?

Answer 3

multiply?

Answer 4

multiply

Answer 5

ok thanks

Answer 6

yw