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If A=[[2,3],[1,-4]]and B=[[1,-2],[-1,3]]...

If `A=[[2,3],[1,-4]]`and `B=[[1,-2],[-1,3]]`, then verify that `(A B)^(-1)=B^(-1)A^(-1)`

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To verify that \((AB)^{-1} = B^{-1}A^{-1}\) for the matrices \(A\) and \(B\), we will follow these steps: 1. **Calculate the product \(AB\)**. 2. **Find the inverse of \(AB\)** using the formula \((X)^{-1} = \frac{1}{\text{det}(X)} \cdot \text{adj}(X)\). 3. **Calculate the inverse of \(A\)**. 4. **Calculate the inverse of \(B\)**. 5. **Calculate the product \(B^{-1}A^{-1}\)**. 6. **Compare \((AB)^{-1}\) with \(B^{-1}A^{-1}\)**. ...
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NCERT ENGLISH-DETERMINANTS-All Questions
  1. Solve the system of equations2x + 5y = 1 and 3x + 2y = 7

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  2. Show that the matrix A=[2 3 1 2]satisfies the equation A^2-4A+I=0

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  3. If A=[[2,3],[1,-4]]and B=[[1,-2],[-1,3]], then verify that (A B)^(-1)=...

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  4. If A=[[1 ,3 ,3],[ 1, 4 ,3],[ 1, 3, 4]],then verify thatA a d j A = |A|...

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  5. Find adj for A=[[2 , 3 ] , [1 , 4]]

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  6. Find minors and cofactors of the elements of the determinant|2-3 5 6 ...

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  7. Find minors and cofactors of the elements a(11), a(21)in the determin...

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  8. Find minors and cofactors of all the elements of the determinant |[1,...

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  9. Using the property of determinants and without expanding, prove that:...

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  10. Using the property of determinants and without expanding, prove that:...

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  11. Using the property of determinants and without expanding, prove that:...

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  12. Using the property of determinants and without expanding, prove that:...

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  13. Using the property of determinants and without expanding, prove that:...

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  14. Using the property of determinants and without expanding, prove that:...

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  15. Using the property of determinants and without expanding, prove that:...

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  16. By using properties of determinants. Show that:|[x,x^2,y z],[ y, y^2,z...

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  17. By using properties of determinants. Show that: (i) |[1,a, a^2],[ 1,...

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  18. If a, b, c are positive and unequal, show that value of the determina...

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

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  20. Show that Delta=|((y+z)^2,xy,zx),(xy,(x+z)^2,yz),(xz,yz,(x+y)^2)|=2x y...

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