) Let A, B be matrices with real coefficients. (a) Find A and B such that AB is defined and BA is not. (b) Find A and B such that AB and BA are defined but have different dimensions. (c) Find square A and B such that (A+ B)² + A² + 2AB + B². (d) Find two non-zero square matrices A and B such that AB = 0.

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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(4) Let A, B be matrices with real coefficients.
(a) Find A and B such that AB is defined and BA is not.
(b) Find A and B such that AB and BA are defined but have different dimensions.
(c) Find square A and B such that (A+ B)² # A²+ 2AB + B².
(d) Find two non-zero square matrices A and B such that AB = 0.
Transcribed Image Text:(4) Let A, B be matrices with real coefficients. (a) Find A and B such that AB is defined and BA is not. (b) Find A and B such that AB and BA are defined but have different dimensions. (c) Find square A and B such that (A+ B)² # A²+ 2AB + B². (d) Find two non-zero square matrices A and B such that AB = 0.
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