SOLUTION: Find an expression for the nth term of the sequence: -2, 0, -2, 0....

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Question 1092845: Find an expression for the nth term of the sequence:
-2, 0, -2, 0....
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
The nth term is
a%5Bn%5D%22%22=%22%22-1%2B%28-1%29%5En
Checking:
a%5B1%5D%22%22=%22%22-1%2B%28-1%29%5E1%22%22=%22%22-1%2B%28-1%29%22%22=%22%22-2
a%5B2%5D%22%22=%22%22-1%2B%28-1%29%5E2%22%22=%22%22-1%2B%281%29%22%22=%22%220
a%5B3%5D%22%22=%22%22-1%2B%28-1%29%5E3%22%22=%22%22-1%2B%28-1%29%22%22=%22%22-2
a%5B4%5D%22%22=%22%22-1%2B%28-1%29%5E4%22%22=%22%22-1%2B%281%29%22%22=%22%220
Edwin