Math Problem Statement

create composition function that the answer is 4

Solution

To create a composition of functions where the result is 4, we can define two functions, f(x)f(x) and g(x)g(x), and find their composition, (fg)(x)=f(g(x))(f \circ g)(x) = f(g(x)), such that the output is 4 for some value of xx.

Let's define:

  • f(x)=x+2f(x) = x + 2
  • g(x)=2g(x) = 2

Now, find (fg)(x)(f \circ g)(x), meaning f(g(x))f(g(x)).

f(g(x))=f(2)=2+2=4f(g(x)) = f(2) = 2 + 2 = 4

Thus, (fg)(x)=4(f \circ g)(x) = 4.

Summary:

The composition function (fg)(x)(f \circ g)(x) results in 4 when:

  • f(x)=x+2f(x) = x + 2
  • g(x)=2g(x) = 2

Would you like more details or have any questions about function composition?

Here are 5 related questions:

  1. What is the domain and range of f(x)=x+2f(x) = x + 2?
  2. How does the composition of functions relate to their individual domains?
  3. What happens if we reverse the order, g(f(x))g(f(x))?
  4. Can we create a composition function with multiple steps to get the same result?
  5. How do we generalize this process for any target output?

Tip: When composing functions, always check the domain of the inner function to ensure the composition is valid!

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Math Problem Analysis

Mathematical Concepts

Function Composition
Basic Algebra

Formulas

f(g(x)) = f(2) = 2 + 2 = 4

Theorems

Function Composition

Suitable Grade Level

Grades 6-8