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If A is square matrix, A', is its transp...

If A is square matrix, A', is its transpose, then `1/2(A-A')` is
a)a Symmetric matric b)a skew-symmetrix matrix
c)a unit matrix d)a null matrix

A

A Symmetric matric

B

a skew-symmetrix matrix

C

a unit matrix

D

a null matrix

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BODY BOOKS PUBLICATION-MATRICES-EXERCISE
  1. If A=[(3,-2),(2,5)] and B=[(7,8),(-6,3)] then A+B is equal to-

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  2. If A=[(10,6),(-4,8)] and I2=[(1,0),(0,1)] then AI2 is equal to a)[(10...

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

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  4. Let A and B be two symmetric matrices of same order. Then show that AB...

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  5. A=[[1,2,2],[2,1,2],[2,2,1]] , then Find 4A and A^2

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  6. A=[[1,2,2],[2,1,2],[2,2,1]] , then show that A^2-4A=5I3

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  7. If A=[(cos^2alpha,cosalphasinalpha),(cosalphasinalpha,sin^2alpha)] and...

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  8. Let A=[(0,a),(b,0)] Find A^2

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  9. Let A=[(0,a),(b,0)] If A^4=I2 then show that ab=1.

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  10. Of the matrices A=[(2,1,3),(4,1,0)] and B=[(1,-1),(0,2),(5,0)] Find AB...

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  11. Let A=[[2,1,3],[4,1,0]] and B=[[1,-1],[0,2],[5,0]] Show that (AB)^T=...

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  12. If a matrix has 5 elements, write all possible order it can have.

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  13. Consider the matrix A=[(3,10),(2,7)] Express the matrix as A=IA.

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  14. Consider the matrix A=[(3,10),(2,7)] Find A^-1 using elementary row tr...

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  15. If A=[[1 , 1, 1],[ 1, 1, 1],[ 1, 1 , 1]], prove that A^n=[[3^(n-...

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  16. If A=[(costheta,sintheta),(-sintheta,costheta)] Find A^2

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  17. If A=[[cos theta, sin theta],[ -sin theta, cos theta]], then prove ...

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  18. F(x) =[[cos x, -sin x, 0],[ sin x, cos x, 0],[ 0, 0, 1]] Show ...

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  19. F(x) =[[cos x, -sin x, 0],[ sin x, cos x, 0],[ 0, 0, 1]] Show ...

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  20. F(x) =[[cos x, -sin x, 0],[ sin x, cos x, 0],[ 0, 0, 1]] Show ...

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