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If x. y, z are non- real number", then t...

If x. y, z are non- real number", then the inverse of matrix `A = [[x,0,0],[0,y,0],[0,0,z]]` is

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The correct Answer is:
`[{:(x^(-1),0,0),(0,y^(-1),0),(0,0,z^(-1)):}]`
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ACCURATE PUBLICATION-DETERMINANTS-Type-II (Fill in the blanks questions)
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  2. A is a square matrix of order 3 and |A|=7, then the value of |adjA| is...

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  3. If A is non-singular matrix of order 3 and |A|=7 then |adjA| equals………...

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  4. If |A|=2, where A is a 2xx2 matrix, then |adjA| is …………

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  5. If A=[{:(3,2),(1,7):}], then A(adjA) equals……..

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  6. If A=[{:(3,2),(1,9):}], then A(adjA) equals……..

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  7. Select the Correct Option If A is an invertible matrix of order 2, the...

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  8. If x. y, z are non- real number", then the inverse of matrix A = [[x,0...

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  9. If A,B,C are the angles of a triangle, then Delta=|{:(sin^(2)A, cotA...

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  10. The determinant Delta=|{:(sqrt(23)+sqrt(3),sqrt(5),sqrt(5)),(sqrt(15)+...

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  11. The value of the determinant Delta=|{:(sin^(2)23^(@)sin^(2)67^(@)cos18...

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  12. If A is matrix of order 3xx3, then |3A|=……….

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  13. If A is invertible matrix of order 3xx3, then |A^(-1)|……….

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  14. If x,y,z epsilon R, then the value of determinant |{:((2^(x)+2^(-x))^(...

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  15. If cos2theta=0, then |{:(0,costheta,sintheta),(costheta,sintheta,0),(s...

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  16. If A is matrix of order 3xx3, then (A^(2))^(-1)=…….

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  17. The sum of the products of elements of any row with the co-factors of ...

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  18. If x=-9 is root of |{:(x,3,7),(2,x,2),(7,6,x):}|=0, then other two roo...

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  19. |{:(0,xyz,x-z),(y-x,0,y-z),(z-x,z-y,0):}|=……………

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  20. If f(x)= |{:((1+x)^(17),(1+x)^(19),(1+x)^(23)),((1+x)^(23),(1+x)^(29),...

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