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Commerce (English Medium) Class 12 - CBSE Question Bank Solutions for Mathematics

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If A = diag (2 − 59), B = diag (11 − 4) and C = diag (−6 3 4), find

B + C − 2A

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If A = diag (2 − 59), B = diag (11 − 4) and C = diag (−6 3 4), find

2A + 3B − 5C

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

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Find matrices X and Y, if X + Y =`[[5     2],[0       9]]`

and X − Y =  `[[3       6],[0   -1]]`

 

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find X if Y =`[[3       2],[1      4]]`and 2X + Y =`[[1       0],[-3        2]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find matrices X and Y, if 2X − Y = `[[6       -6           0],[-4            2           1]]`and X + 2Y =`[[3              2                     5],[-2         1    -7 ]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

X − Y =`[[1      1       1],[1        1          0],[1         0          0]]` and X + Y = `[[3        5         1],[-1       1           1],[11       8           0]]`find X and Y.

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If A =`[[9     1],[7      8]],B=[[1      5],[7      12]]`find matrix C such that 5A + 3B + 2C is a null matrix.

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If A = `[[2      -2],[4             2],[-5          1]],B=[[8             0],[4      -2],[3          6]]`

, find matrix X such that 2A + 3X = 5B.

 
[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If A = `[[1    -3         2],[2        0               2]]`and `B = [[2          -1           -1],[1           0             -1]]` find the matrix C such that A + B + C is 

, find the matrix C such that A + B + C is zero matrix.

 
[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find xy satisfying the matrix equations

`[[X-Y               2            -2],[4                        x                6]]+[[3        -2                2],[1         0            -1]]=[[                6                       0                             0],[         5                       2x+y                5]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find xy satisfying the matrix equations

`[x     y + 2    z-3 ] +  [  y       4          5]=[4        9        12]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find xy satisfying the matrix equations

`x[[2],[1]]+y[[3],[5]]+[[-8],[-11]]=0`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If 2 `[[3    4],[5     x]]+[[1   y],[0    1]]=[[7        0],[10      5]]` find x and y.

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find the value of λ, a non-zero scalar, if λ

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find a matrix X such that 2A + B + X = O, where

`A= [[-1      2],[3        4]],B= [[3       -2],[1          5]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find a matrix X such that 2A + B + X = O, where 

 If A = `[[8            0],[4    -2],[3         6]]` and B = `[[2       -2],[4           2],[-5          1]]`

, then find the matrix X of order 3 × 2 such that 2A + 3X = 5B.

 
[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find xyz and t, if

`3[[x     y],[z      t]]=[[x        6],[-1          2t]]+[[4             x+y],[z+t         3]]`

 

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

Find xyz and t, if

`2[[x         5],[z         t]]+[[x           6],[-1          2t]]=[[7            14],[15        14]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

If X and Y are 2 × 2 matrices, then solve the following matrix equations for X and Y.

`2X + 3Y = [[2,3],[4,0]], 3X+2Y = [[-2,2],[1,-5]]`

[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined

 

\[A = \begin{bmatrix}0 & 1 & 0 \\ 0 & 0 & 1 \\ p & q & r\end{bmatrix}\] ,and I is the identity matrix of order 3, show that A3 = pI + qA +rA2.
[3] Matrices
Chapter: [3] Matrices
Concept: undefined >> undefined
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