Question

Write a recursive formula for the sequence 7 13 19.

Answer 1

nth term = 7 + ( n- 1) × d

Step-by-step explanation:

the formula for this particular arithmetic progression is nth term = a + (n-1) × d

• a is the first term of the sequence, here it is 7
• n is the number of the term you are finding
• and d is the common difference between the terms.

so , the formula for this sequence is

nth term = 7 + (n-1) × 6

find any term with this formula to check if it is correct.

3rd term = 7 + ( 3 -1 ) × 6

= 7 + 12

= 19

so it is correct .