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If a matrix has 28 elements , what are t...

If a matrix has 28 elements , what are the possible orders it can have ? What if it has 13 elements ?

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The correct Answer is:
`=13xx1and1xx13`.
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KUMAR PRAKASHAN-MATRICES -Solutions of NCERT Exemplar Problems (Short Answer Type Questions)
  1. If a matrix has 28 elements , what are the possible orders it can have...

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  2. In the matrix A=[{:(a,1,x),(2,sqrt(3),x^(2)-y),(0,5,-(2)/(5)):}] , wr...

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  3. Construct a(2xx2) matrix where (i) a(ij)=((i-2j)^(2))/(2) (ii) ...

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  4. Construct a3xx2 matrix whose elements are given by a(ij)=e^(ix).sin(jx...

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  5. Find values of a and b if A =B where A=[{:(a+4,3b),(8,-6):}],B=[{:(2a...

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  6. If possible , find the sum of the matrices A and B , where A=[{:(sqrt(...

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  7. If X=[{:(3,1,-1),(5,-2,-3):}]andY=[{:(2,1,-1),(7,2,4):}], find (i) X...

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  8. Find non - zero values of x satisfying the matrix equation : x*[{:(...

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  9. If A=[{:(0,1),(1,1):}]andB=[{:(0,-1),(1,0):}] show that (A+B)*(A-B)ne...

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  10. Find x, if [1" "x" "1][{:(1,3,2),(2,5,1),(15,3,2):}][{:(1),(2),(x):}]=...

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  11. Show that A=[{:(5,3),(-1,-2):}] satisfies the equation A^(2)=3A-7I=0 ...

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  12. Find the matrix A satisfying the matrix equation : [{:(2,1),(3,2):}]...

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  13. Find A , if [{:(4),(1),(3):}]A=[{:(-4,8,4),(-1,2,1),(-3,6,3):}]

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  14. If A=[{:(3,-4),(1,1),(2,0):}]andB=[{:(2,1,2),(1,2,4):}],then verify (B...

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  15. If possible , find BA and AB , where A=[{:(2,1,2),(1,2,4):}],B=[{:...

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  16. Show by an example that for AneO,BneO,AB=O.

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  17. Given A=[{:(2,4,0),(3,9,6):}]andB=[{:(1,4),(2,8),(1,3):}]. Is (AB)'=B'...

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  18. Solve for x and y : x[{:(2),(1):}]+y[{:(3),(5):}]+[{:(-8),(-11):}]=...

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  19. If X and Y are 2xx2 matrices , then solve the following matrix equati...

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  20. If A=[3" " 5],B=[7" " 3] , then find a non - zero matrix C such tha...

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