Matrices And Determinants Flashcards by Ardhra Ajay

Q

Matrice A and B can be multiplied if…

A

No: of columns in A = No: of rows in B

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Q

Det A = def (A’)… If

A

A is a square matrix

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Q

For any scalar k and Matrix M of order n…
|kM| =

A

|kM| = kⁿ|M|

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Q

|adj A| = ?

A

|adj A| = |A|ⁿ-¹

n order of matrix

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Q

Column 1 can be found by…

A

C1 = C1 + C2 + C3

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Q

Row 2 can be found by…

A

R2 = R2 - R 3

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Q

A (adj A) = ?

A

A (adj A) = |A|.I

I is identity matrix

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Q

Determinant of a matrix having same row or column

A

Zero

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Q

A

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