Math Problem Statement
find functions f and g so that f o g = H
H(x)=|4x+6|
Solution
To find functions and such that , where , we can follow these steps:
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Start with : We aim to express as , which means should be represented as a composition of two functions and .
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Define : Let represent the inner function. A natural choice for is the expression inside the absolute value: So, now we have .
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Define : The outer function should apply the absolute value to the result of . Thus, we define as: This ensures that when we apply to , we get .
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Check the composition: Now, let's check if gives us : which matches .
Thus, the functions are:
Would you like further details or have any questions?
Here are 5 related questions for further exploration:
- How would the composition change if did not include an absolute value?
- Can you generalize this approach to other types of transformations (e.g., square roots)?
- What happens to the composition if we replace with a different linear function?
- How does this approach work if and are non-linear functions?
- How would the composition change if we considered instead?
Tip: When solving composition problems, it's useful to identify the "inner" and "outer" operations by analyzing the structure of the function.
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Math Problem Analysis
Mathematical Concepts
Function Composition
Absolute Value
Linear Functions
Formulas
(f o g)(x) = f(g(x))
H(x) = |4x + 6|
Theorems
Composition of Functions
Suitable Grade Level
Grades 10-12
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