9. 6 7 11 9 -6 R : -6 a) show that R is an orthogonal matrix. b) Find det R. If det R is 1, then R is a rotation, so find the axis of the rotation (the eigenvector associated with the eigenvalue A = 1). If det

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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6
R:
6 7
11
9 -6
-6
2
a) show that R is an orthogonal matrix.
b) Find det R. If det R is 1, then R is a rotation, so find the axis of the
rotation (the eigenvector associated with the eigenvalue A
R = -1, then R is a reflection, so find the normal to the mirror', that
is the reflecting plane. This mirror normal is the eigenvector associated
with the eigenvalue A = -1.
1). If det
%3D
Transcribed Image Text:6 R: 6 7 11 9 -6 -6 2 a) show that R is an orthogonal matrix. b) Find det R. If det R is 1, then R is a rotation, so find the axis of the rotation (the eigenvector associated with the eigenvalue A R = -1, then R is a reflection, so find the normal to the mirror', that is the reflecting plane. This mirror normal is the eigenvector associated with the eigenvalue A = -1. 1). If det %3D
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