Ex 3.2, 3 - Chapter 3 Class 12 Matrices (Term 1)
Last updated at Aug. 16, 2021 by Teachoo
Last updated at Aug. 16, 2021 by Teachoo
Transcript
Ex 3.2, 3 Compute the indicated products (i)[■8(a&b@−b&a)] [■8(a&−b@b&a)] [■8(𝑎&𝑏@−𝑏&𝑎)]_"2 × 2" [■8(𝑎&−𝑏@𝑏&𝑎)]_"2 × 2" = [■8( 𝑎 × 𝑎+𝑏 × 𝑏&𝑎 × (−𝑏)+𝑏 × 𝑎@−𝑏 × 𝑎+𝑎 × 𝑏&(−𝑏) × (−𝑏)+𝑎 × 𝑎)]_(2 × 2) = [■8(𝑎2+𝑏2&−𝑎𝑏+𝑎𝑏@−𝑎𝑏+𝑎𝑏&𝑏2+𝑎2)] = [■8(𝑎2+𝑏2&0@0&𝑏2+𝑎2)]
Multiplication of matrices
Multiplication of matrices
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