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For any square matrix A,A A^(T) is a...

For any square matrix `A,A A^(T)` is a

A

unit matrix

B

diagonal matrix

C

symmetric matrix

D

skew-symmetrix matrix

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The correct Answer is:
C
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  10. If A=[[0, 1, -2], [-1, 0, 5], [2, -5, 0]], then

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

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

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

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

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

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

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

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

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

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