Math Problem Statement
For the function f(x) = (5x - 7) / (5x - 9), find f^(-1)(x).
Solution
We are given the function , and we are tasked with finding the inverse of this function, .
Steps to find the inverse:
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Replace with :
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Swap and :
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Solve for : Multiply both sides by to eliminate the denominator: Expand both sides: Get all terms involving on one side and other terms on the opposite side: Factor out on the left-hand side: Solve for :
Thus, the inverse function is:
Would you like a more detailed explanation of any steps?
Here are 5 related questions to explore:
- How do you determine if a function has an inverse?
- What is the graphical interpretation of finding the inverse of a function?
- Are there any restrictions on the domain or range of the given function ?
- How would you verify that ?
- Can you find the inverse of a quadratic function using a similar process?
Tip: When solving for the inverse of a function, always make sure the original function is one-to-one (i.e., passes the horizontal line test).
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Math Problem Analysis
Mathematical Concepts
Inverse Function
Algebra
Rational Functions
Formulas
f(x) = (5x - 7) / (5x - 9)
Inverse formula derivation
Theorems
Inverse Function Theorem
Suitable Grade Level
Grades 10-12