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storchak [24]
3 years ago
14

Find an expression for the nth term (tn) in each of the following sequence:

Mathematics
2 answers:
AveGali [126]3 years ago
7 0

Answer: t_n = 4n - 2

===========================================

Work Shown:

The first term is a = 2 and the common difference is d = 4, since we're adding 4 to each term to get the next term.

t_n = \text{nth term of arithmetic sequence}\\\\t_n = a+d(n-1)\\\\t_n = 2 + 4(n-1)\\\\t_n = 2 + 4n - 4\\\\t_n = 4n - 2

Which is the answer.

--------------------------------

If you were to plug in say n = 3, then we get

t_n = 4n - 2\\\\t_3 = 4(3) - 2\\\\t_3 = 12 - 2\\\\t_3 = 10

showing that 10 is the third term, which matches with what the original sequence shows. I'll let you check the other values of n to fully confirm the answer.

MissTica3 years ago
6 0

Answer:

The answer is 34

Step-by-step explanation: I just have a big brain

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