2. 5. Consider twO basis of R: B = %3D -3 and (= 3. 5- 1- with respect to B, If a vector V E PR has coordinates What is its coordindtes wiHh respect tó C?

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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**Problem 5: Consider Two Basis of \( \mathbb{R}^2 \).**

Given:
- Basis \( B = \left\{ \begin{pmatrix} 7 \\ -1 \end{pmatrix}, \begin{pmatrix} -3 \\ -1 \end{pmatrix} \right\} \)

- Basis \( C = \left\{ \begin{pmatrix} 3 \\ -5 \end{pmatrix}, \begin{pmatrix} -1 \\ 2 \end{pmatrix} \right\} \)

Question:
- If a vector \( \vec{v} \in \mathbb{R}^2 \) has coordinates \( \begin{pmatrix} 2 \\ 1 \end{pmatrix} \) with respect to basis \( B \), what are its coordinates with respect to basis \( C \)?
Transcribed Image Text:**Problem 5: Consider Two Basis of \( \mathbb{R}^2 \).** Given: - Basis \( B = \left\{ \begin{pmatrix} 7 \\ -1 \end{pmatrix}, \begin{pmatrix} -3 \\ -1 \end{pmatrix} \right\} \) - Basis \( C = \left\{ \begin{pmatrix} 3 \\ -5 \end{pmatrix}, \begin{pmatrix} -1 \\ 2 \end{pmatrix} \right\} \) Question: - If a vector \( \vec{v} \in \mathbb{R}^2 \) has coordinates \( \begin{pmatrix} 2 \\ 1 \end{pmatrix} \) with respect to basis \( B \), what are its coordinates with respect to basis \( C \)?
Expert Solution
Step 1

The given 2 bases of 2 are as follows.

B=75, -3-1 and C=3-5, -12

Also, the coordinates of the vector v with respect to the basis B is given by 21.

This implies that the vector v=275+1-3-1.

Hence, we have

v=275+1-3-1=1410+-3-1=119

Step 2

Let ab be the coordinates of the vector v with respect to the basis C.

Then,

v=a3-5+b-12=3a-5a+-b2b=3a-b-5a+2b

Substituting the vector v=119 in v=3a-b-5a+2b, we get 119=3a-b-5a+2b.

 

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