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Let A be a square matrix of order 2x2 ...

Let A be a square matrix of order 2x2
then`abs[KA]` is equal to

A

k|[A]|'

B

k^2|[A]|'

C

k^3|[A]|'

D

3 k|[A]|'

Text Solution

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The correct Answer is:
C
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V PUBLICATION-DETERMINANT-QUESTION BANK
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  2. By using the properties of determinants,prove that |[a^2+1,ab ,ac],[a...

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  3. Let A be a square matrix of order 2x2 thenabs[KA] is equal to

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  4. Which of the following is correct? a)Determinant is a square matrix ...

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  5. Find the area of the triangle whose vertices are (3,8),(-4,2)and (5,1)

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  6. Find the equation of the line joining A(1,3) and B(0,0) using determin...

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  7. Find the area of the triangle with vertices at (1,0),(6,0),(4,3) using...

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  8. Using the property of determinants,show that the points A(a,b+c),B(b...

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  9. Find the values of k if area of triangle is 4 sq. units and vertices a...

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  10. Find the equation of line joining (1,2) and (3,6) using determinants.

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  11. If area of triangle is 35 sq. units with vertices (2,-6), (5,4) and (k...

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  12. Find the minor of 1 in the determinant Delta=|[3, 4, 5 ],[2, 7, 1]...

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  13. Find minors of element 6 in the determinant Delta=|[ 1, 2, 3],[ 4, ...

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  14. Find minors and cofactors of the elements of the determinant |[1 , -2]...

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  15. Find minors and cofactors of the elements a(11), a(21) in the determin...

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  16. Find minors and cofactors of the elements of the determinant |[2, -3,...

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  17. Write Minors and Cofactors of the elements of following determinants: ...

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  18. Using cofactors of element of second row evaluate Delta=|[5, 3, 8],[...

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  19. Using co-factors of elements of third column, evaluate Delta=|[1, x,...

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  20. If Delta=|[a(11), a(12 ), a(13)], [a(21), a(22), a(23)],[ a(31) , a...

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