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Write down the adjoint of the matrix [(2...

Write down the adjoint of the matrix `[(2,-1),(4,3)]`

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PRADEEP PUBLICATION-DETERMINANTS-EXERCISE
  1. Find the area of the triangle whose vertices are (0,0),(a,0) and (0,b)

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  2. For what x, are the points (1,x), (2,2x), (3,3x) collinear?

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  3. Write down the adjoint of the matrix [(2,-1),(4,3)]

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  4. If A^-1 = [(0,1),(1,0)] and B^-1 = [(1,0),(0,1)], find (AB)^-1

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  5. Is the following system of equations consistent? 2x - 3y = 4, 3x + 2 y...

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  6. Find the number of solutions of the system of equations. 3x + 2y = 5, ...

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  7. If A is a scalar matrix of order 3xx3 such that a22 = 5, then find det...

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  8. If A is of order 5xx5 and det A = 1, find det (-A)

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  9. Find A^-1 if A = [(2,0),(0,3)]

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  10. If A = [(a,b),(c,d)], find adj (adj A)

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  11. If |A| = -5, find A (adj A).

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  12. Write the value of the determinant |(0,a-b,a-c), (b-a, 0, b-c),(c-a, c...

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  13. Find x if |(2x, 5),(3,x)| = |(16,5),(3,2)|

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  14. Without expanding, show that : Delta = {:|(cosec^2theta,cot^2theta,1...

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  15. Evaluate the following determinants: {:|(x^2-x+1,x-1),(x+1,x+1)|

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  16. True or False statements : If and B are invertible matrices such tha...

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  17. If A and B are two square matrices of the same order, then AB=BA .

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  18. If Delta=|{:(1,x,x^(2)),(1,y,y^(2)),(1,z,z^(2)):}| and Delta(1)=|{:(1,...

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  19. If A is a square matrix of order 3 and |3A| = k|A|, then write the val...

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  20. For what value of x is the matrix [(5-x,x+1),(2,4)] singular ?

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