2.Find the set of all real numbers x and y such that the endomorphism of R³ represented by the matrix 1 x [0] 1 1 with respect to the basis B in item 2 is a projection.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
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Chapter6: Linear Transformations
Section6.2: The Kernewl And Range Of A Linear Transformation
Problem 59E: Let T:R3R3 be the linear transformation that projects u onto v=(2,1,1). (a) Find the rank and...
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I have already answered the first question. I need the answer for the second question that is, to find the set of all real numbers x and y. Thank you.

1. Let F be any field. Show that the transformation that maps (x, y, z) onto
(2, -x, y) is an automorphism of F3. Find the matrix representing this automorphism and
its inverse with respect to the basis B = {(1,0,0), (0, 1,0), (0,0,1)).
2. Find the set of all real numbers x and y such that the endomorphism of R³
represented by the matrix
1 x y
0x 1
1
x
with respect to the basis B in item 2 is a projection.
Transcribed Image Text:1. Let F be any field. Show that the transformation that maps (x, y, z) onto (2, -x, y) is an automorphism of F3. Find the matrix representing this automorphism and its inverse with respect to the basis B = {(1,0,0), (0, 1,0), (0,0,1)). 2. Find the set of all real numbers x and y such that the endomorphism of R³ represented by the matrix 1 x y 0x 1 1 x with respect to the basis B in item 2 is a projection.
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