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Finding terms of an arithmetic sequence with a recursive formula

a1 =12 an= an-1+7

User Jeanna
by
6.5k points

1 Answer

4 votes

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!

User Ashish Thukral
by
6.6k points
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