Which values of C makes r(x) (a) left-continuous, (b) right-continuous (c) continuous x2 +3 for x < -1 r(x) = Cx for –1 2

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
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Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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**Problem 6: Determining Continuity of \( r(x) \)**

Determine which values of \( C \) make the function \( r(x) \):

- (a) left-continuous,
- (b) right-continuous,
- (c) continuous.

The piecewise function \( r(x) \) is defined as:

\[
r(x) = 
\begin{cases} 
x^2 + 3 & \text{for } x < -1 \\
Cx & \text{for } -1 \leq x \leq 2 \\
-x^2 + 2 & \text{for } x > 2 
\end{cases}
\]

**Explanation:**

- The first piece \( x^2 + 3 \) defines \( r(x) \) for values of \( x \) less than -1.
- The second piece \( Cx \) defines \( r(x) \) for \( x \) between -1 and 2, inclusive.
- The third piece \(-x^2 + 2\) defines \( r(x) \) for values of \( x \) greater than 2.

To find the values of \( C \) that make the function \( r(x) \) left-continuous, right-continuous, or continuous, one must ensure the function values and limits match at the boundaries \( x = -1 \) and \( x = 2 \).
Transcribed Image Text:**Problem 6: Determining Continuity of \( r(x) \)** Determine which values of \( C \) make the function \( r(x) \): - (a) left-continuous, - (b) right-continuous, - (c) continuous. The piecewise function \( r(x) \) is defined as: \[ r(x) = \begin{cases} x^2 + 3 & \text{for } x < -1 \\ Cx & \text{for } -1 \leq x \leq 2 \\ -x^2 + 2 & \text{for } x > 2 \end{cases} \] **Explanation:** - The first piece \( x^2 + 3 \) defines \( r(x) \) for values of \( x \) less than -1. - The second piece \( Cx \) defines \( r(x) \) for \( x \) between -1 and 2, inclusive. - The third piece \(-x^2 + 2\) defines \( r(x) \) for values of \( x \) greater than 2. To find the values of \( C \) that make the function \( r(x) \) left-continuous, right-continuous, or continuous, one must ensure the function values and limits match at the boundaries \( x = -1 \) and \( x = 2 \).
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