9.2 If possible, find two vectors ū and v so that (a) a and c are non-negative linear combinations of u and but is not. (b) a and è are non-negative linear combinations of u and v. (c) a and are non-negative linear combinations of u and ✓ but d is not. (d) a, c, and à are convex linear combinations of u and v. Otherwise, explain why it's not possible.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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need help. linear algebra. 9.1 is solved already

need explanation on 9.2

**9.2** If possible, find two vectors **u** and **v** so that

(a) **a** and **c** are non-negative linear combinations of **u** and **v** but **b** is not.

(b) **a** and **e** are non-negative linear combinations of **u** and **v**.

(c) **a** and **b** are non-negative linear combinations of **u** and **v** but **d** is not.

(d) **a**, **c**, and **d** are convex linear combinations of **u** and **v**.

Otherwise, explain why it's not possible.
Transcribed Image Text:**9.2** If possible, find two vectors **u** and **v** so that (a) **a** and **c** are non-negative linear combinations of **u** and **v** but **b** is not. (b) **a** and **e** are non-negative linear combinations of **u** and **v**. (c) **a** and **b** are non-negative linear combinations of **u** and **v** but **d** is not. (d) **a**, **c**, and **d** are convex linear combinations of **u** and **v**. Otherwise, explain why it's not possible.
On this educational page, we explore vector combinations. Consider the following vectors:

\[
\mathbf{a} = \begin{bmatrix} 1 \\ 1 \end{bmatrix}, \quad \mathbf{b} = \begin{bmatrix} -1 \\ 1 \end{bmatrix}, \quad \mathbf{c} = \begin{bmatrix} 0 \\ 1 \end{bmatrix}, \quad \mathbf{d} = \begin{bmatrix} 0 \\ 2 \end{bmatrix}, \quad \mathbf{e} = \begin{bmatrix} -1 \\ -1 \end{bmatrix}.
\]

### 9.1 Analysis

Determine which of these vectors are:
  
(a) **Linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)?

(b) **Non-negative linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)?

(c) **Convex linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)? 

In the context of linear algebra, we explore various types of combinations to understand the relationships between these vectors.
Transcribed Image Text:On this educational page, we explore vector combinations. Consider the following vectors: \[ \mathbf{a} = \begin{bmatrix} 1 \\ 1 \end{bmatrix}, \quad \mathbf{b} = \begin{bmatrix} -1 \\ 1 \end{bmatrix}, \quad \mathbf{c} = \begin{bmatrix} 0 \\ 1 \end{bmatrix}, \quad \mathbf{d} = \begin{bmatrix} 0 \\ 2 \end{bmatrix}, \quad \mathbf{e} = \begin{bmatrix} -1 \\ -1 \end{bmatrix}. \] ### 9.1 Analysis Determine which of these vectors are: (a) **Linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)? (b) **Non-negative linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)? (c) **Convex linear combinations** of \(\mathbf{a}\) and \(\mathbf{b}\)? In the context of linear algebra, we explore various types of combinations to understand the relationships between these vectors.
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