Question

Please help :( ................

Answer 1

• 9, -23, 73, -215

Explanation:

Write the first 4 terms of the sequence:

• f(1) = 9
• f(n) = -3*f(n-1) + 4, for n ≥ 2

Solution:

• f(1) = 9
• f(2) = -3*f(1) + 4 = -3*9 + 4 = -23
• f(3) = -3*f(2) + 4 = -3*(-23) + 4 = 73
• f(4) = -3*f(3) + 4 = -3*73 + 4 = -215