Question

Use the recursive formula f(n) = 0.4 ⋅ f(n − 1) + 11 to determine the 2nd term if f(1) = 4.

Answer 1

• 12.6

Explanation:

Given the recursive formula

• f(n) = 0.4 × f(n − 1) + 11
• and first term is f(1) = 4

Finding the 2nd term:

• f(2) = 0.4×f(1) + 11
• f(2) = 0.4×4 + 11 = 1.6 + 11 = 12.6