Express the indicated vector w as a linear combination of the given vectors u,v if possible. w = (1,0,–7), u = (5,3,4), v= (3,2,5) %3D

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
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: Express the Indicated Vector as a Linear Combination**

**Objective:**

Express the vector \( w \) as a linear combination of the given vectors \( u \) and \( v \), if possible.

**Vectors Given:**

- \( w = (1, 0, -7) \)
- \( u = (5, 3, 4) \)
- \( v = (3, 2, 5) \)

**Analysis:**

To express \( w \) as a linear combination of \( u \) and \( v \), we look for scalars \( a \) and \( b \) such that:

\[ w = a \cdot u + b \cdot v \]

This translates to solving the system of equations:

\[ a \cdot (5, 3, 4) + b \cdot (3, 2, 5) = (1, 0, -7) \]

Which yields:

1. \( 5a + 3b = 1 \)
2. \( 3a + 2b = 0 \)
3. \( 4a + 5b = -7 \)

**Solution Approach:**

To find \( a \) and \( b \), solve the above system of linear equations. Determine if a solution exists and solve for the values of \( a \) and \( b \) if possible.
Transcribed Image Text:**Problem: Express the Indicated Vector as a Linear Combination** **Objective:** Express the vector \( w \) as a linear combination of the given vectors \( u \) and \( v \), if possible. **Vectors Given:** - \( w = (1, 0, -7) \) - \( u = (5, 3, 4) \) - \( v = (3, 2, 5) \) **Analysis:** To express \( w \) as a linear combination of \( u \) and \( v \), we look for scalars \( a \) and \( b \) such that: \[ w = a \cdot u + b \cdot v \] This translates to solving the system of equations: \[ a \cdot (5, 3, 4) + b \cdot (3, 2, 5) = (1, 0, -7) \] Which yields: 1. \( 5a + 3b = 1 \) 2. \( 3a + 2b = 0 \) 3. \( 4a + 5b = -7 \) **Solution Approach:** To find \( a \) and \( b \), solve the above system of linear equations. Determine if a solution exists and solve for the values of \( a \) and \( b \) if possible.
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