recategorized by

1 Answer

Best answer
1 votes
1 votes
Ans -d

Option a)  P (Q+R)=PQ+QR is wrong because matrix  multiplication  is not commutative .

option b) ( P-Q)^2 should be P^2 -PQ-QP +Q^2

 WE can't write 2pq here because PQ and QP are not same in matrix  multiplication.

Option c) it is not the property  of determinant .

Option d has written  correctly  here.so answer  is option  d
selected by
Answer:

Related questions

0 answers
0 votes
Arjun asked Feb 19, 2017
The matrix form of the linear syatem $\dfrac{dx}{dt}=3x-5y$ and $\dfrac{dy}{dt}=4x+8y$ is$\dfrac{d}{dt}\begin{Bmatrix} x\\y \end{Bmatrix}=\begin{bmatrix} 3 & -5\\ 4& 8 \e...
0 answers
0 votes
Arjun asked Feb 19, 2017
If there are $m$ sources and $n$ destinations in a transportation matrix, the total number of basic variables in a basic feasible solution is$m + n$$m + n + 1$$m + n − ...
0 answers
0 votes
Arjun asked Feb 19, 2017
Given that the determinant of the matrix $\begin{bmatrix} 1 & 3 & 0\\ 2 & 6 & 4\\ -1 & 0 & 2 \end{bmatrix}$ is $-12$, the determinant of the matrix $\begin{bmatrix} 2 & 6...