Consider the following piecewise defined function ae*-b, x < 0 ax² +b, 0≤x≤2 a(x − 3)³ + b(x − 4) + 26, x ≥ 2 where a and b are real constants. For what values of a and b is f(x) continuous? f(x) = faez For no real values of a and b, f(x) is continuous. For any pair (a, b) where a = 2b, f(x) is continuous. For any pair (a, b) where 5a + 3b = Only for (a, b) = (2,4) Only for (a, b) = (4,2) 26, f(x) is continuous.

College Algebra
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ISBN:9781337282291
Author:Ron Larson
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Chapter2: Functions And Their Graphs
Section2.4: A Library Of Parent Functions
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### Piecewise Function and Continuity

**Consider the following piecewise defined function:**

\[
f(x) = \begin{cases} 
a e^x - b, & x < 0 \\
a x^2 + b, & 0 \leq x < 2 \\
a(x - 3)^3 + b(x - 4) + 26, & x \geq 2 
\end{cases}
\]

**where \(a\) and \(b\) are real constants. For what values of \(a\) and \(b\) is \(f(x)\) continuous?**

**Options:**

1. \( \bigcirc \) For no real values of \(a\) and \(b\), \(f(x)\) is continuous.
2. \( \bigcirc \) For any pair \((a, b)\) where \(a = 2b\), \(f(x)\) is continuous.
3. \( \bigcirc \) For any pair \((a, b)\) where \(5a + 3b = 26\), \(f(x)\) is continuous.
4. \( \bigcirc \) Only for \((a, b) = (2, 4)\)
5. \( \bigcirc \) Only for \((a, b) = (4, 2)\)

### Explanation

In this piecewise function, \(f(x)\) is defined differently over three intervals:

1. **For \(x < 0\):** \(f(x) = a e^x - b\)
2. **For \(0 \leq x < 2\):** \(f(x) = a x^2 + b\)
3. **For \(x \geq 2\):** \(f(x) = a(x - 3)^3 + b(x - 4) + 26\)

In order for \(f(x)\) to be continuous at all points, the following must hold true:
- The function must match at the boundaries of the intervals.

For \(f(x)\) to be continuous at \(x = 0\):
\[
\lim_{x \to 0^-} f(x) = \lim_{x \to 0^+} f(x) 
\]
\[
ae^0 - b = a(0)^2 + b
Transcribed Image Text:### Piecewise Function and Continuity **Consider the following piecewise defined function:** \[ f(x) = \begin{cases} a e^x - b, & x < 0 \\ a x^2 + b, & 0 \leq x < 2 \\ a(x - 3)^3 + b(x - 4) + 26, & x \geq 2 \end{cases} \] **where \(a\) and \(b\) are real constants. For what values of \(a\) and \(b\) is \(f(x)\) continuous?** **Options:** 1. \( \bigcirc \) For no real values of \(a\) and \(b\), \(f(x)\) is continuous. 2. \( \bigcirc \) For any pair \((a, b)\) where \(a = 2b\), \(f(x)\) is continuous. 3. \( \bigcirc \) For any pair \((a, b)\) where \(5a + 3b = 26\), \(f(x)\) is continuous. 4. \( \bigcirc \) Only for \((a, b) = (2, 4)\) 5. \( \bigcirc \) Only for \((a, b) = (4, 2)\) ### Explanation In this piecewise function, \(f(x)\) is defined differently over three intervals: 1. **For \(x < 0\):** \(f(x) = a e^x - b\) 2. **For \(0 \leq x < 2\):** \(f(x) = a x^2 + b\) 3. **For \(x \geq 2\):** \(f(x) = a(x - 3)^3 + b(x - 4) + 26\) In order for \(f(x)\) to be continuous at all points, the following must hold true: - The function must match at the boundaries of the intervals. For \(f(x)\) to be continuous at \(x = 0\): \[ \lim_{x \to 0^-} f(x) = \lim_{x \to 0^+} f(x) \] \[ ae^0 - b = a(0)^2 + b
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