Question
upstudy study bank question image url

Sketch a rational function subject to the given conditions. Horizontal asymptote: \( y=0 \) Vertical asymptotes: \( x=1 \) and \( x=-1 \) \( y \)-intercept: \( (0,1) \) No \( x \)-intercepts Symmetric to the \( y \)-axis Passes through the point: \( \left(3,-\frac{1}{8}\right) \)

Ask by Collins Summers. in the United States
Mar 19,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The rational function is \( f(x) = \frac{-1}{x^2 - 1} \).

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 create a rational function that meets all the specified conditions, we can start with the general form of a rational function: \[ f(x) = \frac{P(x)}{Q(x)} \] **1. Determine the components of the function:** - Since the function must have vertical asymptotes at \( x = 1 \) and \( x = -1 \), the denominator should be \( Q(x) = (x - 1)(x + 1) = x^2 - 1 \). - The horizontal asymptote is at \( y=0 \) which indicates that the degree of the polynomial in the numerator \( P(x) \) should be less than that of the denominator. - For no \( x \)-intercepts, \( P(x) \) must not have any real roots. A simple choice is setting \( P(x) = k \), where \( k \) is a positive constant to ensure the \( y \)-intercept is positive. **2. Ensure symmetry:** - Since the function must be symmetric about the \( y \)-axis, we can choose \( P(x) = k \) as a constant, which is automatically symmetric. **3. Use the \( y \)-intercept condition:** - To find \( k \), we use the \( y \)-intercept \( (0,1) \): \[ f(0) = \frac{k}{0^2 - 1} = \frac{k}{-1} = 1 \implies k = -1 \] Substituting this value gives us \( P(x) = -1 \). **4. Build the function:** The rational function is then: \[ f(x) = \frac{-1}{x^2 - 1} = \frac{-1}{(x - 1)(x + 1)} \] **5. Check the point \( \left(3,-\frac{1}{8}\right) \):** \[ f(3) = \frac{-1}{3^2 - 1} = \frac{-1}{9 - 1} = \frac{-1}{8} \] This matches the required point. **Final function:** The rational function satisfying all conditions is: \[ f(x) = \frac{-1}{x^2 - 1} \] Now go have some fun sketching it! You'll see that the graph approaches \( y=0 \) for large values of \( x \), and shoots up or down near the vertical asymptotes at \( x=1 \) and \( x=-1\).

Related Questions

Latest Pre Calculus Questions

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