3 years ago

Write an explicit formula for an, the nth term of the sequence 2 -8 32

Mathematics

1 answer:

andriy [413]3 years ago

7 0

9514 1404 393

Answer:

an = 2(-4)^(n-1)

Step-by-step explanation:

The general form of the explicit formula for a geometric series with first term a1 and common ratio r is ...

an = a1·r^(n-1)

Your sequence has a1=2 and r=-8/2 = -4. So, the explicit formula is ...

an = 2(-4)^(n-1)

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