Answer:
a(1)= -3
a(n)=a(n-1) (-3)
Step-by-step explanation:
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Recursive formula of the given sequence -3, 9, -27, 81, -243, ... , is (-3)^n ; where n = 1,2,3, ...
The given sequence is -3, 9, -27, 81, -243, ... ,
First term = -3
Second term = (-3)^2 = 9
Third term = (-3)^3 = -27
Fourth term = (-3)^4 = 81
Fifth term = (-3)^5 = -243
Hence, the recursive formula of the given sequence -3, 9, -27, 81, -243, ... , is (-3)^n ; where n = 1,2,3, ...
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