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The matrix [[0, 5,-7], [-5,0,11],[7,-11,...

The matrix `[[0, 5,-7], [-5,0,11],[7,-11,0]]` is known as

A

symmetric matrix

B

diagonal matrix

C

upper triangular matrix

D

skew symmetric matrix

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The correct Answer is:
D
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HIMALAYA PUBLICATION-MATRICES AND DETERMINANTS-QUESTION BANK
  1. If A and B are two square matrices of same order then (A B)^(prime)=

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  2. If A=[(3,5),(2,0)] and B = [(1,17),(0,-10)] then |AB| is equal to

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  3. The matrix [[0, 5,-7], [-5,0,11],[7,-11,0]] is known as

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  4. If in a square matrix A=(a(i j)) we have a(ji)=a(i j) for all i, j the...

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  5. If A= [[4,x+2],[2x-3, x-1]] is symmetric then x=

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  6. If A is a square matrix then A . A^(T) is

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  7. If A+B=[[1,0],[1,1]] and A-2 B=[[-1,1],[0,1]] then A=

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  8. If A=[[-1,2],[-2,1]], B=[[3,4],[2,-1]] and A+2 X=B, then X=

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  9. If A=[(1,-3),(2,k)] and A^(2)-4A+10I=A, then k =

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  10. If 2 A+3 B=[[2,-1,4],[3,2,5]] and A+2 B=[[5,0,3],[1,6,2]] then B=

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  11. If O(A)=2xx3, O(B)=3xx2, and O(C )=3xx3 which one of the following is ...

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  12. If A= [[1 ,-2, 2],[0, 2, -3],[3 ,-2, 4]], then A . adj A=

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  13. The inverse of the matrix [[1 , 0, 0],[ a , 1 , 0],[ b, c , 1]] is

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  14. Given below are atomic radii of same elements of second period. {:("...

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  15. |[3421, 3422],[3423,3424]|=

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  16. Let A=[[200,50],[10,2]] B=[[50,40],[2,3]]. Then the value of the deter...

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  17. If k is a scalar and A is a n -square matrix, then |k A|=

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  18. The value of |[2 , 3, 1],[-3,-1, -4],[-2,-5,-3]|=

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  19. |[4 sin ^2 theta, cos 2 theta],[ -cos 2 theta,cos ^2 theta]| =

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  20. |(x, 4, y+z),(y, 4, z+x),(z, 4, x+y)|=

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