Answer:
f(6)=2304
Explanation:
hello :
f(1)=9 and f(n) = -2 f(n-1) so f is the geometric seqeunce the common ratio is : r = -2
the nth term is : f(n) = f(1) (-2) ^(n-1)
when n=6 : f(6) = 9(-2)^8 =2304
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