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Question

If A=[1231] and B=[11143]

Find Matrix X, given that
X-5A=3B


A

[87314]

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B

[8734]

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C

[387314]

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D

[387314]

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Solution

The correct option is D

[387314]


Given X5A=3BX=3B+5A

A=[1231] and B=[11143]

5A=[5×15×25×(3)5×1]=[510155]

3B=[3×113×(1)3×43×3]=[333129]

3B+5A=[387314]


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