Question

Use the recursive function for the geometric sequence 2,-6,18 and -54 to represent the 9th term

Answer 1

Answer:

A

Step-by-step explanation:

A recursive formula allows the term in a sequence to be obtained from the previous term.

To find any term in the sequence multiply the previous term by the common ratio r

r = - 6 ÷ 2 = 18 ÷ - 6 = - 3

Thus the 9 th term can be found using

f(9) = f(8) × - 3 = - 3f(8) → A

Answer 2

Use the recursive function for the geometric sequence 2,-6,18 and -54 to represent the 9th term

Answer:

f(9)=f(8)•(-3)