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Solve by matrix inversion method the fol...

Solve by matrix inversion method the following system of equations.
`x + 3y = 1, 3x - y = 2`

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The correct Answer is:
`x = 7/10, y = 1/7`
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CHHAYA PUBLICATION-ADJOINT AND INVERSE OF A MATRIX AND SOLUTION OF LINEAR SIMULTANEOUS EQUATIONS BY MATRIX METHOD-LONG ANSWER TYPE QUESTIONS
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  10. If A=[(1,0,0),(0,1,0),(0,0,1)] then A^2+2A=

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  11. If A is a 3×3 matrix and B is it's adjoint matrix. if |B|=64, then |A|...

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  12. If A and B are symmetric matrices then

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  13. From the matrix equation AX = B, find X, given A = [(1,-1),(2,1)] an...

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  14. If 1, omega,omega^(2) are the cube roots of unity then the vlue of m f...

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  15. Given A = [(1,2,3),(3,-2,1),(4,2,1)] , X = [(x),(y),(z)] and B = [(1),...

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  16. If A = [(1,2),(-2,2)] find A^(T).

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  17. If A={:[(4,2),(-1,1)]:} then (A-2I)(A-3I) is equal to

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  18. Find the product [(1,-1,0),(2,3,4),(0,1,2)] xx [(2,2,-4),(-4,2,-4),(2,...

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  19. Let A = [(2,8),(1,1)], find A^(-1).

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  20. If A=[(0,1),(1,0)],then A^4=

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