Math Problem Statement
Plot points between and beyond each x-intercept and vertical asymptote. Find the value of the function at the given value of x. x
negative 10 negative 9 6 8 9 f left parenthesis x right parenthesis equals StartFraction x minus 7 Over x squared minus 49 EndFraction enter your response here enter your response here enter your response here enter your response here enter your response here
Solution
Let’s solve this step-by-step. We are working with the function:
First, we’ll simplify and analyze the function, identify the intercepts and asymptotes, and find the function values at the given points: and .
Step 1: Simplify the function
The denominator can be factored:
Thus, the function becomes:
For all , we can cancel the factor , giving:
Step 2: Identify key features
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Vertical asymptote: The vertical asymptote occurs when the denominator is 0. That happens when , i.e., at:
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Hole in the graph: There's a removable discontinuity (hole) at , where the factor was canceled out.
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x-intercept: Set the numerator . However, this is impossible, so there are no x-intercepts.
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y-intercept: Evaluate .
Step 3: Evaluate the function at the given points
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At :
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At :
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At :
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At :
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At :
Final Answer:
Would you like further clarification or a graph of this function to visualize it?
Related Questions:
- What happens to as and ?
- What are horizontal asymptotes, if any, of the function?
- How do you determine if a discontinuity is removable or non-removable?
- What is the behavior of the function as ?
- How would the function change if we modified the numerator?
Tip: Always factor the denominator when analyzing rational functions—it simplifies detecting asymptotes and holes.
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Math Problem Analysis
Mathematical Concepts
Rational Functions
Asymptotes
Intercepts
Limits
Formulas
Factorization of difference of squares: a^2 - b^2 = (a - b)(a + b)
Simplification of rational functions
Theorems
Rational Function Asymptote Theorem
Limit Definition of Asymptotes
Suitable Grade Level
Grades 10-12
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