Math Problem Statement

To find the inverse function f−1(x)f^{-1}(x)f−1(x) for f(x)=1x+15f(x) = \frac{1}{x} + 15f(x)=x1​+15

Solution

To find the inverse of the function f(x)=1x+15f(x) = \frac{1}{x} + 15, follow these steps:

Step 1: Write the function as y=f(x)y = f(x)

y=1x+15y = \frac{1}{x} + 15

Step 2: Solve for xx in terms of yy

First, subtract 15 from both sides to isolate the term involving xx: y15=1xy - 15 = \frac{1}{x} Now, take the reciprocal of both sides to solve for xx: x=1y15x = \frac{1}{y - 15}

Step 3: Replace yy with xx to find f1(x)f^{-1}(x)

Thus, the inverse function is: f1(x)=1x15f^{-1}(x) = \frac{1}{x - 15}

So, the inverse function is: f1(x)=1x15f^{-1}(x) = \frac{1}{x - 15}

Would you like more details or clarifications?

Here are 5 related questions to explore:

  1. How do we verify that two functions are inverses?
  2. What happens to the domain and range when finding inverse functions?
  3. How can inverse functions be applied to real-world problems?
  4. What are the limitations when finding the inverse of a function?
  5. How does the graph of a function compare to its inverse?

Tip: When checking if two functions are inverses, remember that f(f1(x))=xf(f^{-1}(x)) = x and f1(f(x))=xf^{-1}(f(x)) = x.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Inverse Functions
Algebra
Rational Functions

Formulas

f(x) = 1/x + 15
f^{-1}(x) = 1/(x - 15)

Theorems

Inverse Function Theorem

Suitable Grade Level

Grades 10-12