Given matrix A and matrix B. Find (if possible) the matrices: (a) AB (b) BA.A=begin{bmatrix}-1 -2-3 end{bmatrix} , B=begin{bmatrix}1 & 2 & 3 end{bmatrix}

Dolly Robinson

Dolly Robinson

Answered question

2020-12-16

Given matrix A and matrix B. Find (if possible) the matrices: (a) AB (b) BA.
A=[123],B=[123]

Answer & Explanation

Aniqa O'Neill

Aniqa O'Neill

Skilled2020-12-17Added 100 answers

Step 1
A=[123],B=[123]
order of A=3×1
order of B=1×3
Step 2
a)AB
It is possible and order will be 3×3
[123][123]=[123246369]
Step 3
b)BA
It is possible and order will be 1×1
[123][123]
=[149]
=[14]

Jeffrey Jordon

Jeffrey Jordon

Expert2022-01-27Added 2605 answers

Answer is given below (on video)

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