Math Problem Statement
features are: horizontal asymptotes, vertical asymptotes, coordinates of holes, x and y intercepts
Solution
Let's break down the given function and determine each feature of the graph as requested:
1. Simplifying the function:
The function simplifies as follows: Since the in the numerator and denominator cancel out, we are left with the simplified function:
This will help us identify key features.
2. Vertical Asymptote:
A vertical asymptote occurs where the denominator equals zero and the function is undefined. Setting the denominator to zero: This gives . Therefore, there is a vertical asymptote at .
3. Horizontal Asymptote:
To determine the horizontal asymptote, observe the behavior of the function as or . The term in the denominator grows large, making the whole fraction approach zero. Therefore, the function approaches: Thus, there is a horizontal asymptote at .
4. Holes:
Holes occur when a factor cancels out from both the numerator and denominator, making the function undefined at that point. However, after simplifying the original function, we see that does not result in a hole, but instead leads to a vertical asymptote. There are no holes in this graph.
5. X-intercept:
The x-intercept is found by setting . However, in the simplified function, the numerator is a constant (4), meaning the function never equals zero. There is no x-intercept.
6. Y-intercept:
To find the y-intercept, we evaluate the function at : Therefore, the y-intercept is at .
Summary of Features:
- Vertical Asymptote:
- Horizontal Asymptote:
- Holes: None
- X-intercept: None
- Y-intercept:
Would you like more details on any of these features?
Here are five related questions to expand this topic:
- How would the function change if the numerator were instead of ?
- What would happen to the vertical asymptote if the denominator were ?
- Can a function have multiple vertical asymptotes? Provide an example.
- What is the significance of a hole in a function graph, and how does it differ from an asymptote?
- How can we find oblique asymptotes for rational functions, and when do they occur?
Tip: Always start by simplifying a rational function to better understand its behavior and features like asymptotes and intercepts.
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Math Problem Analysis
Mathematical Concepts
Rational Functions
Asymptotes
Intercepts
Holes
Formulas
Vertical Asymptote: Set denominator equal to 0
Horizontal Asymptote: Examine limit as x approaches infinity
X-intercept: Set numerator equal to 0
Y-intercept: f(0) = value of the function at x = 0
Theorems
Limit Theorem for Horizontal Asymptotes
Rational Function Asymptote Rules
Suitable Grade Level
Grades 11-12
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