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If A is a square matrix, A' its transpos...

If A is a square matrix, A' its transpose, then `(1)/(2)(A-A')` is …. Matrix

A

a unit

B

an elementry

C

a symmetric

D

a skew-symmetric

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Verified by Experts

The correct Answer is:
D
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NIKITA PUBLICATION-MATRICES-MULTIPLE CHOICE QUESTIONS
  1. For any square matrix A,A A^(T) is a

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  2. Let A be a square matrix. Then which of the following is not a symmetr...

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  3. If A is a square matrix, A' its transpose, then (1)/(2)(A-A') is …. Ma...

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  4. If A and B are symmetric matrices of same order, then which one of the...

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  5. If A is a square matrix of order n and |A|=D, |adjA|=D', then

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  6. If adjB=A ,|P|=|Q|=1,t h e na d j(Q^(-1)B P^(-1)) is P Q b. Q A P c. P...

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  7. Let A, B and C be ntimesn matrices, which one of the following is a co...

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  8. If A=[[0, 1, -2], [-1, 0, 5], [2, -5, 0]], then

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  9. If A=[[1, 0], [-1, 3]], then R1 harr R2 on A gives

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  10. If A=[[3, 1], [4, 5]], then R1 harrR2 on A gives

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  11. If A=[[5, 4], [1, 3]], then C1 harr C2 on A gives

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  12. If A=[[1, 0, 2], [2, 4, 5]], then 3R1 on A gives

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  13. If A=[[1, 2, -1], [0, 1, 3]], then 2C2 on A gives

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  14. If A=[[1, 0, 2], [2, 4, 5]] and B=[[1, 2, -1], [0, 1, 3]], then the ad...

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  15. If A=[[1, -1, 3], [2, 3, 4]], then R1 to R1 -R2 on A gives

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  16. If A=[[1, 0, 2], [2, 3, 4]], then C1 to C1 +C3 on A gives

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  17. If A=[[1, 2, -1], [3, -2, 5]], then first R1 harr R2 and then C1 to C1...

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  18. IfA==[[1, -1, 3], [2, 1, 0], [3, 3, 1]], then first 3R3 and then C3 to...

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  19. The co-factor of -4 and 9 in [[-1, -2, 3], [-4, -5, -6], [-7, 8, 9]] ...

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  20. The co-factor of elements of the second row of [[1, 2, 3], [-4, 3, 6],...

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