
Calculus: Early Transcendentals
8th Edition
ISBN: 9781285741550
Author: James Stewart
Publisher: Cengage Learning
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![**Problem Statement:**
Given that
\[ f(x) = x^{11} h(x) \]
and
\[ h(-1) = 2 \]
\[ h'(-1) = 5 \]
Calculate \( f'(-1) \).
**Hint:** Use the product rule and the power rule.
---
**Solution Reference:**
To solve for \( f'(-1) \), apply the product rule for differentiation: if \( f(x) = u(x)v(x) \), then
\[ f'(x) = u'(x)v(x) + u(x)v'(x) \]
For this problem:
- Let \( u(x) = x^{11} \) and \( v(x) = h(x) \).
- Therefore, \( u'(x) = 11x^{10} \) using the power rule.
Substitute into the product rule formula:
\[ f'(x) = 11x^{10}h(x) + x^{11}h'(x) \]
Evaluate \( f'(-1) \):
\[ f'(-1) = 11(-1)^{10}h(-1) + (-1)^{11}h'(-1) \]
Since:
\[ (-1)^{10} = 1 \]
and
\[ (-1)^{11} = -1 \]
Substitute the given values:
\[ f'(-1) = 11(1)(2) + (-1)(5) \]
\[ f'(-1) = 22 - 5 \]
\[ f'(-1) = 17 \]
So, \( f'(-1) = 17 \).](https://content.bartleby.com/qna-images/question/4d09ffa2-b6c2-4e97-915d-74d176d987ab/127f0c58-56b1-4472-883c-370c2a546cd7/9lo5mbb_thumbnail.jpeg)
Transcribed Image Text:**Problem Statement:**
Given that
\[ f(x) = x^{11} h(x) \]
and
\[ h(-1) = 2 \]
\[ h'(-1) = 5 \]
Calculate \( f'(-1) \).
**Hint:** Use the product rule and the power rule.
---
**Solution Reference:**
To solve for \( f'(-1) \), apply the product rule for differentiation: if \( f(x) = u(x)v(x) \), then
\[ f'(x) = u'(x)v(x) + u(x)v'(x) \]
For this problem:
- Let \( u(x) = x^{11} \) and \( v(x) = h(x) \).
- Therefore, \( u'(x) = 11x^{10} \) using the power rule.
Substitute into the product rule formula:
\[ f'(x) = 11x^{10}h(x) + x^{11}h'(x) \]
Evaluate \( f'(-1) \):
\[ f'(-1) = 11(-1)^{10}h(-1) + (-1)^{11}h'(-1) \]
Since:
\[ (-1)^{10} = 1 \]
and
\[ (-1)^{11} = -1 \]
Substitute the given values:
\[ f'(-1) = 11(1)(2) + (-1)(5) \]
\[ f'(-1) = 22 - 5 \]
\[ f'(-1) = 17 \]
So, \( f'(-1) = 17 \).
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