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If A^2-A+I=0,A^-1=?...

If `A^2-A+I=0`,`A^-1=?`

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BODY BOOKS PUBLICATION-DETERMINANTS-EXERCISE
  1. If A^2-A+I=0,A^-1=?

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  2. Consider Delta=|(alpha,beta,gamma),(alpha^2,beta^2,gamma^2),(beta+gamm...

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  3. Consider Delta=|(alpha,beta,gamma),(alpha^2,beta^2,gamma^2),(beta+gamm...

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  4. If abs[[3,x],[x,x]]=abs[[-2,2],[4,1]],find the value of x.

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  5. A=[[1,-3,1],[2,0,4],[1,2,-2]] Calculateabs[A]

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  6. A=[(1,-3,1),(2,0,4),(1,2,-2)] Find |adj A|

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  7. A=[[1,-3,1],[2,0,4],[1,2,-2]] Find abs[3A]

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  8. If A = [[1,2],[4,2]] then show that |2A|= 4|A|

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  9. If |[x,2],[18,x]| = |[6,2],[18,6]|, then x =

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  10. Without expanding the determinant prove the following. |[a-b,b-c,c-a...

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  11. If a,b,c are in A.P, find value of |[2y+4,5y+7,8y+a],[3y+5,6y+8,9y+...

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  12. Find the value of k if the area of a triangle with vertices (k,4),(2,-...

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  13. If [[2,5],[-3,7]]xxA=[[17,-1],[47,-13]] then Find the 2x2 matrix A.

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  14. If [[2,5],[-3,7]]xxA=[[17,-1],[47,-13]] then Find A^2.

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  15. Using properties of determinants show that abs[[1+a,1,1],[1,1+b,1]...

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  16. Consider the point A(-2,-3),B(3,2),C(-1,-8) Find the area of Delt...

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  17. Consider the point A(-2,-3),B(3,2),C(-1,-8) Find third vertex of any...

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  18. If A=[(2,-3),(4,6)].Find adj A.

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  19. If A=[(2,-3),(4,6)]. Find A^-1.

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  20. Given Delta=|(y+z,x,y),(z+x,z,x),(x+y,y,z)| Apply R1rarrR1+R2+R3.

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