c) Let A, B and C be linear maps from the two dimensional plane to the plane given in terms of stan dard I, j basis vectors by Ai-j, Aj=i (anti clock wise rotation 90 degree) BE-i, Bj=j (reflection across vertical axis) CO=-0 (reflection across origin) Draw pictures describing the actions of linear maps A, B and C and the compositions AB, BA, AC, CA, BC, CB. • Which pairs of these maps commute. • Which are correct identities and why i) A=C i) C=1 ii) A'=I1, A=I iv) B =I v) B =B

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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c) Let A, B and C be linear maps fr om the two dimensional plane to the plane given
in terms of stan dard I, j basis vectors by
Ai-j, Aj=i (anti clock wise rotation 90 degree)
BF-i, Bj=j (reflection acr oss vertical axis)
CO=-0
(reflection across origin)
Draw pictures describing the actions of linear maps A, B and C and the
compositions AВ, ВА, АС, СА, ВС, СВ.
• Which pairs of these maps commute.
• Which are correct identities and why
i) A=C i) C=1
ii) A=1, A=I iv) B=Iv) B=B
Transcribed Image Text:c) Let A, B and C be linear maps fr om the two dimensional plane to the plane given in terms of stan dard I, j basis vectors by Ai-j, Aj=i (anti clock wise rotation 90 degree) BF-i, Bj=j (reflection acr oss vertical axis) CO=-0 (reflection across origin) Draw pictures describing the actions of linear maps A, B and C and the compositions AВ, ВА, АС, СА, ВС, СВ. • Which pairs of these maps commute. • Which are correct identities and why i) A=C i) C=1 ii) A=1, A=I iv) B=Iv) B=B
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