Describe the long run behavior of f(x) = -2(4)²-3 As →-00, f(x) → ? ✓ As x→∞o, f(x) → ? ✓ ? > Next Question 8 -00 0 -3

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.2: Transformations Of Quadratic Functions
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### Understanding Exponential Functions: Long Run Behavior

In this section, we will analyze the long-run behavior of the function:

\[ f(x) = -2 \cdot (4)^x - 3 \]

To understand the behavior of \( f(x) \) as \( x \) approaches positive and negative infinity, consider the questions and explanations provided below.

#### Exploration of \( f(x) \) as \( x \) Approaches Negative Infinity

**Question:**
As \( x \rightarrow -\infty \), \( f(x) \rightarrow \) ?

Options for selection:
- ?
- \(\infty\)
- \(-\infty\)
- 0
- -3

**Explanation:**
Trace the behavior of the function as \( x \) moves toward negative infinity.

#### Exploration of \( f(x) \) as \( x \) Approaches Positive Infinity

**Question:**
As \( x \rightarrow \infty \), \( f(x) \rightarrow \) ?

Options for selection:
- ?
- \(\infty\)
- \(-\infty\)
- 0
- -3

**Explanation:**
Assess the behavior of the function when \( x \) progresses toward positive infinity.

Click the "Next Question" button to continue with the practice and consolidate your learning.

---

**Diagram/Graph Explanation:**

Currently, there is no visual graph provided, but envision the graph of the given exponential function \( f(x) \). 

1. **As \( x \) approaches \(-\infty\)**:
    - \( 4^x \) becomes a very small positive number approaching 0 because any positive number raised to a large negative power tends to zero.
    - Therefore, \( f(x) \approx -3 \).

2. **As \( x \) approaches \(\infty\)**:
    - \( 4^x \) grows exponentially. Since it's multiplied by \(-2\), the term \(-2 \cdot 4^x\) will become very large but negative.
    - Thus, \( f(x) \rightarrow -\infty \).

Understanding these behaviors will help you in analyzing the general trends of exponential functions.
Transcribed Image Text:### Understanding Exponential Functions: Long Run Behavior In this section, we will analyze the long-run behavior of the function: \[ f(x) = -2 \cdot (4)^x - 3 \] To understand the behavior of \( f(x) \) as \( x \) approaches positive and negative infinity, consider the questions and explanations provided below. #### Exploration of \( f(x) \) as \( x \) Approaches Negative Infinity **Question:** As \( x \rightarrow -\infty \), \( f(x) \rightarrow \) ? Options for selection: - ? - \(\infty\) - \(-\infty\) - 0 - -3 **Explanation:** Trace the behavior of the function as \( x \) moves toward negative infinity. #### Exploration of \( f(x) \) as \( x \) Approaches Positive Infinity **Question:** As \( x \rightarrow \infty \), \( f(x) \rightarrow \) ? Options for selection: - ? - \(\infty\) - \(-\infty\) - 0 - -3 **Explanation:** Assess the behavior of the function when \( x \) progresses toward positive infinity. Click the "Next Question" button to continue with the practice and consolidate your learning. --- **Diagram/Graph Explanation:** Currently, there is no visual graph provided, but envision the graph of the given exponential function \( f(x) \). 1. **As \( x \) approaches \(-\infty\)**: - \( 4^x \) becomes a very small positive number approaching 0 because any positive number raised to a large negative power tends to zero. - Therefore, \( f(x) \approx -3 \). 2. **As \( x \) approaches \(\infty\)**: - \( 4^x \) grows exponentially. Since it's multiplied by \(-2\), the term \(-2 \cdot 4^x\) will become very large but negative. - Thus, \( f(x) \rightarrow -\infty \). Understanding these behaviors will help you in analyzing the general trends of exponential functions.
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