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Compute the products AB and BA whichever exists in the followi

Question

Compute the products $A B$ and $B A$ whichever exists in the following case:
$A = [12 - 2 3]$ and $B = [122331]$

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Noah Discussed

Compute the products

A B

and

B A

whichever exists in the following case:

A = [12 - 2 3]

and

B = [122331]

10 mins ago

Discuss this question LIVE

10 mins ago

Text solutionVerified

A = [12 - 2 3]

and

B = [122331]

In product

B A

number of columns in

B

id greater than the number of rows in

A .

So,

B A

does not exists.

\Rightarrow

A B = [12 - 2 3]

[122331]

= [1 - 4 2 + 6 2 - 6 4 + 9 3 - 2 6 + 3]

= [- 3 8 - 4 13 19]

∴

A B = [- 3 8 - 4 13 19]

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Question Text	Compute the products $A B$ and $B A$ whichever exists in the following case: $A = [12 - 2 3]$ and $B = [122331]$
Answer Type	Text solution:1
Upvotes	150