Krishna
0

Step 1: Make sure that the given set of numbers arranged in some particular order. Because the question says that the set of numbers in sequence.


Step 2; Explore the given rule

            EXAMPLE: x_{n+1} = ax_n - 3

            Succeeding term = a (preceding term) - 3


Step 3: According to the given rule substitute the values(n). And simplify

            EXAMPLE: x_n = 4n − 3 

            To find the twenty-first term, replace n by 21. based up on the rule it(n) may

            change to lower value or higher value :

            therefore x21 = 4 × 21 − 3 = 84 − 3 = 81

Step 4: Repeat the same steps to calculate a_3 in terms of k