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Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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
Transcribed Image Text:Determine whether the statement below is true or false. Justify the answer.
If A is a 3x2 matrix, then the transformation X+Ax cannot be one-to-one.
Choose the correct answer below.
O A. The statement is false. A transformation is one-to-one if each vector in the codomain is mapped to by at most one vector in the
domain. If Ax=b does not have a free variable, then the transformation represented by A is one-to-one.
B. The statement is true. Transformations which have standard matrices which are not square cannot be one-to-one nor onto
because they do not have pivot positions in every row and column.
O C. The statement is true. A transformation is one-to-one only if the columns of A are linearly independent and a 3x2 matrix cannot
have linearly independent columns.
D. The statement is false. A transformation is one-to-one if each vector in the codomain is mapped to by at most one vector in the
domain. It does not matter what dimensions a vector is as long as it meets this requirement. The matrix A could be 1x4 and still
represent a one-to-one transformation.
Expert Solution
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The given statement, "If is a matrix, then the transformation cannot be one-to-one.
We have to determine whether the statement is true or false.
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