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(d) Use the matrix in part (c) to compute .
Let V be a four-dimensional vector space with basis B, let W be a seven-dimensional vector space
20. with basis , and let be a linear transformation. Identify the four vector spaces that
contain the vectors at the corners of the accompanying diagram.
Figure Ex-20
In each part, fill in the missing part of the equation.
21.
(a)
(b)
Give two reasons why matrices for general linear transformations are important.
22.
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