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If A=[{:(,1),(,2),(,3):}]and B =[{:(,-5,...

If `A=[{:(,1),(,2),(,3):}]and B =[{:(,-5,4,0),(,0,2,-1),(,1,-3,2):}]"then"`

A

`AB=[(-5,8,0),(0,4,-2),(3,-9,6)]`

B

`AB=[(-2,-1,4)]`

C

`AB=[(-1),(1),(1)]`

D

AB does not exist

Text Solution

Verified by Experts

The correct Answer is:
D
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MOTION-MATRICES -Exercise - 1
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  2. If A is a singular matrix of order n, then (adjA) is

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  3. If A=[{:(,1),(,2),(,3):}]and B =[{:(,-5,4,0),(,0,2,-1),(,1,-3,2):}]"th...

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  4. If A and B are square matrices of order 2, then (A+B)^2 =

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  5. If [(1,x,1)][(1,3,2),(0,5,1),(0,3,2)][(x),(1),(-2)]=[0] then x is

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  6. if A and B are two matrices such that AB=B and BA=A,then A^(2)+B^(2) i...

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  7. If A and B are two square matrices of same order satisfying AB=A and ...

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  9. <b>a. Row Matrix :</b> Matrix of order 1 xx m is called <b>row matrix<...

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  11. Which relation is true for A =[(2,-1),(-1,2)] and B=[(1,4),(-1,1)] (1)...

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  12. If A=[(a,b),(b,a)]and A^(2)=[(alpha,beta),(beta,alpha)], then -

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  13. If A and B are square matrices of order n xx n such that A^2-B^2=(A-B)...

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  14. If A=[(ab,b^2),(-a^2,-ab)], then A is

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  15. A = [[2,-1],[-7,4]] & B =[[4,1],[7,2]] then B^TA^T is :

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  16. If a non-singular matrix and A^(T) denotes the tranpose of A, then

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  17. If A is skew-symmetric matrix, then trace of A is

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  18. If A and B are symmetric matrices, then A B A is

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  19. If A is a skew-symmetric matrix and n is an even natural number,...

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  20. Which one of the following is wrong ?

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