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schepotkina [342]
3 years ago
11

Finding terms of an arithmetic sequence with a recursive formula a1 =12 an= an-1+7

Mathematics
1 answer:
Basile [38]3 years ago
5 0

Hey there!!

Recursive formula :

... a( n ) = a ( n - 1 ) + 7

The first term is 12

To find the second term, we will need to substitute 2 in place of ' n '

2 term :

... a( 2 ) = a ( 2 - 1 ) + 7

... a( 2 ) = a( 1 ) + 7

We know a( 1 ) = 12

... a( 2 ) = 12 + 7

... 19 is the second term and we will need to use this to find the other terms.

Hope my answer helps!

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