Question

What is the explicit formula for this geometric sequence?
64, 16, 4, 1,

Answer 1

Answer:
`a_(n)=64\left((1)/(4) \right)^(n-1)`

Explanation:

The common ratio is 16/64 = 1/4, so substituting into the formula, we get that
`a_(n)=64\left((1)/(4) \right)^(n-1)`