Find The Formulas 3,-6,12,-24

Find the formulas 3,-6,12,-24

 

Answer:

an = 3(-2)ⁿ⁻¹

Step-by-step explanation:

Given geometric sequence:

3,-6,12,-24

Find the common ratio, r:

a₂/a₁ = a₃/a₂

-6/3 = 12/-6

-2 = -2

r = -2

Find the rule/formula in finding the rest of the term in the sequence:

an = a₁(r)ⁿ⁻¹

an = 3(-2)ⁿ⁻¹


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