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Mathematics
Problem
If
p
p
p
,
q
q
q
,
r
r
r
are 3 real number satisfying the matrix equation,
[
p
q
r
]
[
3
4
1
3
2
3
2
0
2
]
=
[
3
0
1
]
[p \ q \ r] \begin{bmatrix} 3 & 4 & 1 \\ 3 & 2 & 3 \\ 2 & 0 & 2 \end{bmatrix} = [3 \ 0 \ 1]
[
p
q
r
]
3
3
2
4
2
0
1
3
2
=
[
3
0
1
]
, then
2
p
+
q
−
r
2p + q - r
2
p
+
q
−
r
equals : (1)
−
1
-1
−
1
(2)
4
4
4
(3)
−
3
-3
−
3
(4)
2
2
2
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