Math Problem Statement

If f, of, 1, equals, 8f(1)=8 and f, of, n, equals, f, of, n, minus, 1, plus, 4f(n)=f(n−1)+4 then find the value of f, of, 6f(6).

Answer

Attempt 1 out of 2

Solution

To find f(6)f(6), we need to use the recursive relationship provided:

  • f(1)=8f(1) = 8
  • f(n)=f(n1)+4f(n) = f(n-1) + 4 for n>1n > 1

Step-by-step Calculation:

  1. Given: f(1)=8f(1) = 8
  2. Find f(2)f(2): f(2)=f(1)+4=8+4=12f(2) = f(1) + 4 = 8 + 4 = 12
  3. Find f(3)f(3): f(3)=f(2)+4=12+4=16f(3) = f(2) + 4 = 12 + 4 = 16
  4. Find f(4)f(4): f(4)=f(3)+4=16+4=20f(4) = f(3) + 4 = 16 + 4 = 20
  5. Find f(5)f(5): f(5)=f(4)+4=20+4=24f(5) = f(4) + 4 = 20 + 4 = 24
  6. Find f(6)f(6): f(6)=f(5)+4=24+4=28f(6) = f(5) + 4 = 24 + 4 = 28

Final Answer:

f(6)=28f(6) = 28

Would you like further clarification on any step?

Here are 5 questions based on this solution:

  1. What is the recursive function formula used here?
  2. Can you find f(7)f(7) using the same method?
  3. How would the function change if the increment was 5 instead of 4?
  4. Can you generalize the function for f(n)f(n)?
  5. How does recursion help in defining functions like this?

Tip: Recursive formulas break down a problem into smaller instances, simplifying complex calculations.

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Math Problem Analysis

Mathematical Concepts

Recursion
Algebra
Sequences

Formulas

f(n) = f(n-1) + 4
f(1) = 8

Theorems

Recursive Function Definition

Suitable Grade Level

Grades 6-8