Math, asked by InvincibleBoy, 1 year ago

Question:-Prove Those Matrices Are Singular

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Question From Matrices [ Class-12]

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Answered by Ruhanika105
15
Hi there!

A matrix is said to be singular if it's determinant is zero.
So to find whether the matrix is singular or not we need to find the determinant.

For equation... refer to the attachment...

Hope it helps!!
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Ruhanika105: thnx
Swarup1998: how did u write expanding... u should have mentioned that det(A) meaning the determinat of the matrix dear
Swarup1998: *determinant
Swarup1998: I meant that without writing the determinant... it is not appropriate to expand it... by the way.. good answer
Swarup1998: it is not always needed to write the expanding along which row or column... writing detA = some value, is also acceptable... no need of writing the determinant too
Answered by Swarup1998
7
The answer is given in the attachment :

Thank you for your question :
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FuturePoet: very simple question
FuturePoet: i already done this question in class 9 th
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