Question
upstudy study bank question image url

The one-to-one function \( h \) is defined below. \[ h(x)=\frac{x-7}{5 x+8} \] Find \( h^{-1}(x) \), where \( h^{-1} \) is the inverse of \( h \). Also state the domain and range of \( h^{-1} \) in interval notation. Domain of \( h^{-1}(x)=\square \)

Ask by Burns Ramirez. in the United States
Mar 19,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The inverse function is \( h^{-1}(x) = \frac{-8x - 7}{5x - 1} \). The domain of \( h^{-1}(x) \) is all real numbers except \( x = \frac{1}{5} \), which can be written as \( (-\infty, \frac{1}{5}) \cup (\frac{1}{5}, \infty) \).

Solution

Sign in to Unlock Answers for Free!

A Learning Platform Trusted by Millions of Real Students and Teachers.

star-icon Unlock

Answered by UpStudy AI and reviewed by a Professional Tutor

Mind Expander

To find the inverse function \( h^{-1}(x) \), we start by setting \( y = h(x) \): \[ y = \frac{x-7}{5x+8} \] Next, we swap \( x \) and \( y \): \[ x = \frac{y-7}{5y+8} \] Now, we solve for \( y \). Multiply both sides by \( 5y + 8 \): \[ x(5y + 8) = y - 7 \] Distributing gives us: \[ 5xy + 8x = y - 7 \] Rearranging terms to isolate \( y \): \[ 5xy - y = -8x - 7 \] Factoring out \( y \): \[ y(5x - 1) = -8x - 7 \] Now, divide both sides by \( (5x - 1) \): \[ y = \frac{-8x - 7}{5x - 1} \] Thus, we find the inverse function: \[ h^{-1}(x) = \frac{-8x - 7}{5x - 1} \] **Domain of \( h^{-1}(x) \)**: The function is undefined when the denominator is zero, so we need to solve: \[ 5x - 1 = 0 \implies x = \frac{1}{5} \] Thus, the domain of \( h^{-1}(x) \) is: \[ \text{Domain of } h^{-1}(x) = (-\infty, \frac{1}{5}) \cup (\frac{1}{5}, \infty) \] **Range of \( h^{-1}(x) \)**: The range of the inverse function corresponds to the domain of the original function \( h(x) \). For \( h \), since the denominator can never be zero, we have: \[ 5x + 8 \neq 0 \implies x \neq -\frac{8}{5} \] The range is therefore: \[ \text{Range of } h^{-1}(x) = (-\infty, -\frac{8}{5}) \cup (-\frac{8}{5}, \infty) \] So to summarize: \[ h^{-1}(x) = \frac{-8x - 7}{5x - 1} \] \(\text{Domain of } h^{-1}(x) = (-\infty, \frac{1}{5}) \cup (\frac{1}{5}, \infty)\) and \(\text{Range of } h^{-1}(x) = (-\infty, -\frac{8}{5}) \cup (-\frac{8}{5}, \infty)\).

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy