Differential Equations and Linear Algebra (4th Edition)

Published by Pearson
ISBN 10: 0-32196-467-5
ISBN 13: 978-0-32196-467-0

Chapter 6 - Linear Transformations - 6.2 Transformations of R2 - Problems - Page 397: 2

Answer

See below

Work Step by Step

Obtain $T(x)=Ax=\begin{bmatrix} 0 & 1\\ -1& 0 \end{bmatrix}\begin{bmatrix} x_1\\x_2 \end{bmatrix}$ Hence, $T(1,1)=Ax=\begin{bmatrix} 0 & 1\\ -1& 0 \end{bmatrix}\begin{bmatrix} 1\\1 \end{bmatrix}=\begin{bmatrix} 1\\ -1 \end{bmatrix}$ $T(2,1)=Ax=\begin{bmatrix} 0 & 1\\ -1& 0 \end{bmatrix}\begin{bmatrix} 2\\1 \end{bmatrix}=\begin{bmatrix} 1 \\ -2 \end{bmatrix}$ $T(2,2)=Ax=\begin{bmatrix} 0 & 1\\ -1& 0 \end{bmatrix}\begin{bmatrix} 2\\2 \end{bmatrix}=\begin{bmatrix} 2 \\ -2 \end{bmatrix}$ $T(1,2)=Ax=\begin{bmatrix} 0 & 1\\ -1& 0 \end{bmatrix}\begin{bmatrix} 1\\2 \end{bmatrix}=\begin{bmatrix} 2 \\ -1 \end{bmatrix}$
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