Question
upstudy study bank question image url

For each function, find the domain and the vertical and horizontal asymptotes (if any). \( g(x)=\frac{x+2}{x-5} \)

Ask by Powers Pena. in the United States
Feb 19,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The function \( g(x) = \frac{x+2}{x-5} \) has a domain of all real numbers except \( x = 5 \). It has a vertical asymptote at \( x = 5 \) and a horizontal asymptote at \( y = 1 \).

Solution

Function by following steps: - step0: Find the horizontal asymptotes: \(g\left(x\right)=\frac{x+2}{x-5}\) - step1: Evaluate the limits \(\lim _{x\rightarrow +\infty}\left(g\left(x\right)\right)\) and \(\lim _{x\rightarrow -\infty}\left(g\left(x\right)\right):\) \(\begin{align}&\lim _{x\rightarrow +\infty}\left(\frac{x+2}{x-5}\right)\\&\lim _{x\rightarrow -\infty}\left(\frac{x+2}{x-5}\right)\end{align}\) - step2: Calculate: \(\begin{align}&1\\&1\end{align}\) - step3: The finite values are horizontal asymptotes: \(\begin{align}&g\left(x\right)=1\end{align}\) Find the vertical asymptotes of \( g(x)=\frac{x+2}{x-5} \). Function by following steps: - step0: Find the vertical asymptotes: \(g\left(x\right)=\frac{x+2}{x-5}\) - step1: Evaluate the limit: \(\lim _{x\rightarrow 5}\left(\frac{x+2}{x-5}\right)\) - step2: Evaluate the left-hand and the right-hand limits: \(\begin{align}&\lim _{x\rightarrow 5^{-}}\left(\frac{x+2}{x-5}\right)\\&\lim _{x\rightarrow 5^{+}}\left(\frac{x+2}{x-5}\right)\end{align}\) - step3: Evaluate the left-hand limit: \(\begin{align}&-\infty\\&+\infty\end{align}\) - step4: Limit does not exist: \(\textrm{The limit does not exist}\) - step5: \(x=5\) is a vertical asymptote\(:\) \(\begin{align}&x=5\textrm{ }\textrm{is a vertical asymptote}\end{align}\) - step6: List all vertical asymptotes of the function: \(\begin{align}&x=5\end{align}\) Let's analyze the function \( g(x) = \frac{x+2}{x-5} \) step by step to find its domain and asymptotes. ### Step 1: Finding the Domain The domain of a function is the set of all possible input values (x-values) for which the function is defined. For rational functions, the function is undefined where the denominator is zero. 1. Set the denominator equal to zero: \[ x - 5 = 0 \] Solving this gives: \[ x = 5 \] Thus, the function is undefined at \( x = 5 \). Therefore, the domain of \( g(x) \) is all real numbers except \( x = 5 \): \[ \text{Domain: } (-\infty, 5) \cup (5, \infty) \] ### Step 2: Finding Vertical Asymptotes Vertical asymptotes occur where the function approaches infinity, which happens at the values that make the denominator zero (and are not canceled by the numerator). From our previous calculation, we found that: \[ x = 5 \] is where the function is undefined. Therefore, there is a vertical asymptote at: \[ x = 5 \] ### Step 3: Finding Horizontal Asymptotes Horizontal asymptotes describe the behavior of the function as \( x \) approaches infinity or negative infinity. For rational functions, the horizontal asymptote can be determined by comparing the degrees of the polynomial in the numerator and the denominator. In this case: - The degree of the numerator \( (x + 2) \) is 1. - The degree of the denominator \( (x - 5) \) is also 1. When the degrees are equal, the horizontal asymptote is given by the ratio of the leading coefficients. Here, both leading coefficients are 1. Thus, the horizontal asymptote is: \[ y = 1 \] ### Summary - **Domain:** \( (-\infty, 5) \cup (5, \infty) \) - **Vertical Asymptote:** \( x = 5 \) - **Horizontal Asymptote:** \( y = 1 \)

Answered by UpStudy AI and reviewed by a Professional Tutor

error msg
Explain
Simplify this solution

Extra Insights

To find the domain of \( g(x) = \frac{x+2}{x-5} \), we need to identify values of \( x \) that make the denominator zero, as these values are not permitted. Setting the denominator \( x - 5 = 0 \) gives \( x = 5 \). Thus, the domain is all real numbers except \( x = 5 \), which can be expressed as \( (-\infty, 5) \cup (5, \infty) \). Now, for vertical asymptotes, we look for values of \( x \) that make the denominator zero while the numerator is non-zero. Since we already found that \( x = 5 \) is the value that produces a zero in the denominator, \( g(x) \) has a vertical asymptote at \( x = 5 \). Next, we assess horizontal asymptotes by examining the behavior of \( g(x) \) as \( x \) approaches infinity. The degrees of the numerator and denominator are both 1, and their leading coefficients are 1. Therefore, we find that the horizontal asymptote is given by the ratio of these coefficients, so \( y = 1 \) is the horizontal asymptote. In summary, the function has: - Domain: \( (-\infty, 5) \cup (5, \infty) \) - Vertical asymptote: \( x = 5 \) - Horizontal asymptote: \( y = 1 \)

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