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Dimas [21]
2 years ago
10

Find the given term 11, -33,99 9th term

Mathematics
1 answer:
kvv77 [185]2 years ago
5 0
Assuming the sequence goes on like this 11,-33,99,-297,891,...,
its general formula is a_n=-11\cdot(-1)^n\cdot3^{n-1}

So, the 9th term is
a_9=-11\cdot(-1)^9\cdot3^{9-1}=-11\cdot(-1)\cdot6561=72171
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