Please help me ! I need to pass Write a recursive formula for the following arithmetic sequence 8,12,16,20. ... A1 = An = For n _> 2

asked Sep 5, 2020 136k views

3 votes

Please help me ! I need to pass

Write a recursive formula for the following arithmetic sequence

8,12,16,20. ...

A1 =

An = For n _> 2

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2 votes

Explanation:

$a_1=8\\a_2=a_1+4=8+4=12\\a_3=a_2+4=12+4=16\\a_4=a_3+4=16+4=20\\\vdots\\\\a_n=\left\{\begin{array}{ccc}a_1=8\\a_n=a_(n-1)+4\end{array}\right$

Minseong answered Sep 9, 2020

5.3k points

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