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swat32
3 years ago
13

Write an expression for the nth term of... 2,1,0,-1...

Mathematics
1 answer:
Drupady [299]3 years ago
7 0

Answer:

a_{n} = 3 - n

Step-by-step explanation:

There is a common difference between consecutive terms in the sequence, that is

1 - 2 = 0 - 1 = - 1 - 0 = - 1

This indicates the sequence is arithmetic with n th term

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 2 and d = - 1 , thus

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

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