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iogann1982 [59]
2 years ago
11

What is an explicit formula for an arithmetic sequence with a common difference of -2 and whose first term is one?

Mathematics
1 answer:
joja [24]2 years ago
3 0

Answer:

a_{n} = - 2n +3

Step-by-step explanation:

the explicit formula for an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 1 and d = - 2 , then

a_{n} = 1 - 2(n - 1) = 1 - 2n + 2 = - 2n + 3

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