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Check PictureThe graph of the rational function f(x) is shown below. Using the graph, determine which of the following local and end behaviors are correct.

Check PictureThe graph of the rational function f(x) is shown below. Using the graph-example-1
User Jrc
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2 Answers

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The rational function f(x) has a hole at x = 3 and horizontal asymptotes at y = -2. As x approaches 3 from the left, f(x) approaches positive infinity, and as x approaches 3 from the right, f(x) approaches negative infinity. As x approaches positive or negative infinity, f(x) approaches -2.

Local Behavior

As x approaches 3 from the left (3-), f(x) approaches positive infinity (∞).

As x approaches 3 from the right (3+), f(x) approaches negative infinity (-∞).

End Behavior

As x approaches positive infinity (∞), f(x) approaches -2.

As x approaches negative infinity (-∞), f(x) approaches 2.

Therefore, the following local and end behaviors are correct:

As x approaches 3 from the left (3-), f(x) approaches positive infinity (∞).

As x approaches 3 from the right (3+), f(x) approaches negative infinity (-∞).

As x approaches positive infinity (∞), f(x) approaches -2.

As x approaches negative infinity (-∞), f(x) approaches 2.

The graph of the rational function f(x) has a vertical asymptote at x = 3, with the graph approaching positive infinity as x approaches 3 from the left and negative infinity as x approaches 3 from the right. This indicates that f(x) has a hole at x = 3. As x approaches positive or negative infinity, the graph of f(x) approaches the horizontal asymptote y = -2.

Therefore, the following local and end behaviors are correct:

As x approaches 3 from the left (3-), f(x) approaches positive infinity (∞).

As x approaches 3 from the right (3+), f(x) approaches negative infinity (-∞).

As x approaches positive infinity (∞), f(x) approaches -2.

As x approaches negative infinity (-∞), f(x) approaches 2.

User James Privett
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13 votes
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Solution

For the rational function given, we are to determine the local an end behaviors.


\begin{gathered} As\text{ }x\rightarrow-3^-,f(x)\rightarrow\infty \\ As\text{ }x\operatorname{\rightarrow}-3^+,f(x)\operatorname{\rightarrow}\infty \\ As\text{ }x\operatorname{\rightarrow}-\infty,f(x)\operatorname{\rightarrow}-1 \\ As\text{ }x\rightarrow\infty,f(x)\rightarrow-1 \end{gathered}

These are the correct local and end behaviors

User Chris Pont
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