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Let the value of a determinant is Delta....

Let the value of a determinant is `Delta`.
Then the value of a determinant obtained by interchanging two rows is

A

`Delta`

B

`-Delta`

C

0

D

1

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BODY BOOKS PUBLICATION-DETERMINANTS-EXERCISE
  1. Ifabs[[1,-3,2],[4,-1,2],[3,5,2]]=40,thenabs[[1,4,3],[-3,-1,5],[2,2,2]]...

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  2. Show that Delta=abs[[-a^2,ab,ac],[ba,-b^2,bc],[ac,bc,-c^2]]=4a^2b^2c^2

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  3. Let the value of a determinant is Delta. Then the value of a determi...

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  4. Show that abs[[a+b,b+c,c+a],[b+c,c+a,a+b],[c+a,a+b,b+c]]=2abs[[a,b,c],...

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  5. The value of the determinant |(sin10,-cos10),(sin50,cos50)| is a)-1 b)...

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  6. Using properties of determinants, show that abs[[a,a^2,b+c],[b,b^2...

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  7. Choose the correct answer from the bracket.The value of the determin...

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  8. Consider abs[[a,a+b,a+b+c],[2a,3a+2b,4a+3b+2c],[3a,6a+3b,10a+6b+3c]]

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  9. Choose the correct answer from the bracket.Consider a sqare matrix o...

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  10. Verify A(adjA)=(adjA)A=abs[A]I for the matrix A=[[5,-2],[3,-2]]that,...

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  11. Choose the correct answer from the bracket. If A=[(cosx,sinx),(-sinx,c...

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  12. Find the inverse of the following A=[[1,-1,2],[0,2,-3],[3,-2,4]]

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  13. If A=[[2,3],[1,-2]] and A^-1=kA,then the value of 'k' is

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  14. If A=[[1,-1,1],[2,-1,0],[1,0,0]], Find A^2

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  15. If A=[[1,-1,1],[2,-1,0],[1,0,0]], Show that A^2=A^-1

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  16. Choose the correct answer. If each element of a third order square mat...

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  17. Consider the matrix A=[(-8,5),(2,4)] Show that 'A' satisfies the equat...

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  18. Consider the matrix A=[(-8,5),(2,4)] Hence find A^-1.

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  19. If A and B are matrices of order 3 such that abs[A]=-1,abs[B]=3,then...

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  20. If A=[(1,tanx),(-tanx,1)], Show that, A^TA^-1=[(cos2x,-sin2x),(sin2x,c...

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