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If A = [a_{ij}] = {bmatrix} 2& 3 & -5 1 & 4 & 9 0 & 7 & -2{bma

Question

If $A = [a_{ij}] = ⎣ ⎡ 210347 - 5 9 - 2 ⎦ ⎤$ and $B = [b_{ij}] = ⎣ ⎡ 2 - 3 1 - 1 42 ⎦ ⎤$ , then find $a_{11} b_{11} + a_{22} b_{22}$ .

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Benjamin Discussed

A = [a_{ij}] = ⎣ ⎡ 210347 - 5 9 - 2 ⎦ ⎤

and

B = [b_{ij}] = ⎣ ⎡ 2 - 3 1 - 1 42 ⎦ ⎤

, then find

a_{11} b_{11} + a_{22} b_{22}

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Text solutionVerified

Given

A = [a_{ij}] = ⎣ ⎡ 210347 - 5 9 - 2 ⎦ ⎤

and

B = [b_{ij}] = ⎣ ⎡ 2 - 3 1 - 1 42 ⎦ ⎤

from

A

matrix and

B

matrix

a_{11} = 2, b_{11} = 2, a_{22} = 4, b_{22} = 4

So,

a_{11} b_{11} + a_{22} b_{22} = 2 \times 2 + 4 \times 4 = 20

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Question Text	If $A = [a_{ij}] = ⎣ ⎡ 210347 - 5 9 - 2 ⎦ ⎤$ and $B = [b_{ij}] = ⎣ ⎡ 2 - 3 1 - 1 42 ⎦ ⎤$ , then find $a_{11} b_{11} + a_{22} b_{22}$ .
Answer Type	Text solution:1
Upvotes	150