If a11 a12 b11 b12 А — and B= | b21 b22. a21 a22 are arbitrary vectors in R2x2, then the mapping (А, В) a11b11 + a12b12 + a2ı b21 + a22b2 defines an inner product in R2x2. Use this inner product to determine (A, B)), ||A||, ||B||, and the angle a A.B between A and B for -4 А — [ 2 and B= 3 -3 1 -1 (А, В) ||4| | ||B|| a A,B =

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.1: Inner Product Spaces
Problem 12EQ
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If
| b11 b12
[ b21 b22.
a11
a12
A =
and B =
a21
a22
are arbitrary vectors in R2x2, then the mapping
(А, В) —
a11b11 + a12b12 + aıb21 + a22b»2
defines an inner product in R2x2. Use this inner product to determine (A, B)), ||A||, ||B||, and the angle a 4 B between A and B for
2.
and B =
-4
-1
-3
A =
1
-1
(A, B)
|| ||
||B||
& A‚B =
Transcribed Image Text:If | b11 b12 [ b21 b22. a11 a12 A = and B = a21 a22 are arbitrary vectors in R2x2, then the mapping (А, В) — a11b11 + a12b12 + aıb21 + a22b»2 defines an inner product in R2x2. Use this inner product to determine (A, B)), ||A||, ||B||, and the angle a 4 B between A and B for 2. and B = -4 -1 -3 A = 1 -1 (A, B) || || ||B|| & A‚B =
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