7. 8. Show that T(x1, x2, x3) = (3x₁ − 6x3, x2 + x3, X1 X2 - 2x3) is a linear trans- formation by finding a matrix that implements the mapping. Note that x1, x2, and x3 are not vectors but are entries in vectors. Determine if the linear transformation from the previous problem is (a) onto (b) one-to-one

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.6: Introduction To Linear Transformations
Problem 55EQ
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7.
8.
Show that T(x1, x2, x3) = (3x₁ - 6x3, x2 + x3, X1₁ - X2 - 2x3) is a linear trans-
formation by finding a matrix that implements the mapping. Note that x₁, x2, and x3
are not vectors but are entries in vectors.
Determine if the linear transformation from the previous problem is
(a) onto
(b) one-to-one
Transcribed Image Text:7. 8. Show that T(x1, x2, x3) = (3x₁ - 6x3, x2 + x3, X1₁ - X2 - 2x3) is a linear trans- formation by finding a matrix that implements the mapping. Note that x₁, x2, and x3 are not vectors but are entries in vectors. Determine if the linear transformation from the previous problem is (a) onto (b) one-to-one
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