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If A^(-1)=[[3,-1,1],[-15,6,-5],[5,-2,2]]...

If `A^(-1)=[[3,-1,1],[-15,6,-5],[5,-2,2]]` and `B=[[1,2,-2],[-1,3,0],[0,-2,1]]`find`(AB)^-1`

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V PUBLICATION-DETERMINANT-QUESTION BANK
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  2. Prove that |[a^2,bc,ac+c^2],[a^2+ab,b^2,ac],[ab,b^2+bc,c^2]|=4a^2b^2c^...

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  3. If A^(-1)=[[3,-1,1],[-15,6,-5],[5,-2,2]] and B=[[1,2,-2],[-1,3,0],[0,-...

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  4. Let A=[[1,-2,1],[-2,3,1],[1,1,5]] verify that (A^(-1))^(-1)=A

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  5. Evaluate |[x, y, x+y],[ y, x+y, x],[ x+y, x, y]|

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  6. evaluate | [1,x,y],[1,x+y,y],[1,x,x+y] |

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  7. Using properties of determinants, prove that |[alpha, alpha^2, beta+g...

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  8. Using properties of determinants, prove that |[3a,-a+b,-a+c],[-b+a,3...

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  10. Using properties of determinants, prove that |[sinalpha,cosalpha,cos...

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  11. Consider a system of linear equations which is given below, 2/x+3/...

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  12. If a,b,c are in A.P., then the determinant |[x+2, x+3, x+2a],[x+3,x+...

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  13. If x, y, z are non zero real numbers, then find the inverse of matrix ...

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  14. Let A = [[1,Sintheta,1],[-Sintheta,1,Sintheta],[-1,-Sintheta,1]], wher...

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  15. If A(x1, y1), B(x2, y2) and C(x3, y3) are vertices of an equilateral t...

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  16. Solve the following system of equations using matrix method. 2 x+5 y=1...

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

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  18. Let A=[[1 , 4, 0],[ -1, 2, 2],[ 0, 0, 2]] i) is A singular? i...

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  19. Solve the following system of equations using matrix method. 2 x+5 y=1...

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  20. Find the minors and cofactors of a(11), a(1 2) and a(13) of the matrix...

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