D= [-7 2 ] Find -3D
[ 4 3 ]
[-1 0 ]

A. [ 21 2 ]
[ -12 3 ]
[ 3 0 ]

B. No solution

C. [ 21 -6 ]
[ 4 3 ]
[ -1 0 ]

D. [ 21 -6 ]
[ -12 -9 ]
[ 3 0 ]

Question

D= [-7  2 ] Find -3D
         [ 4   3 ]
         [-1  0 ]

A. [ 21   2 ]
    [ -12  3 ]
    [ 3     0  ]

B. No solution

C. [ 21   -6 ]
    [ 4      3  ]
    [ -1    0  ]
    
 
D. [ 21    -6 ]
     [ -12   -9 ]
     [ 3      0   ]

anonymous · Answer

Each and every term in the matrix will get multiplied by (-3)..
Can you solve it further???

anonymous · Answer

21           -6
-12         -9
3              0

anonymous · Answer

option D

anonymous · Answer

well said waterineyes

anonymous · Answer

Thanks @karthik_a.k.a_joker..

earthcitizen · Answer

$$-3 \times \left[\begin{matrix}-7 & 2  \ 4 & 3 \-1& 0 \end{matrix}\right]$$

anonymous · Answer

The answer is D, you need to times every item in the matrix by -3. From this you can determine the right answer by singling out the answer.

earthcitizen · Answer

http://www.wolframalpha.com/input/?i=-3+*+ {{-7%2C2}%2C{4%2C3}%2C{-1%2C0}}

anonymous · Answer

ya answer is D