What is the explicit formula for this geometric sequence?
1 answer:
Answer:
<h2>(-6)×3ⁿ⁻¹</h2>
Step-by-step explanation:
We notice that in this sequence (an) we multiply by 3 each time to get the next term
e.g : (-6)×3 = -18
then
the commonn ratio q = 3
the first term a1 = -6
the explicit formula :
an = a1×qⁿ⁻¹ = (-6)×3ⁿ⁻¹
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