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Question
Mathematics
if [x y z] = (1/40) [5&10&-5 -5&-2&13 10&-4&6][5 0 5], then the value of x + y + z is
Q. if
⎣
⎡
x
y
z
⎦
⎤
=
40
1
⎣
⎡
5
−
5
10
10
−
2
−
4
−
5
13
6
⎦
⎤
⎣
⎡
5
0
5
⎦
⎤
, then the value of
x
+
y
+
z
is
5554
233
Matrices
Report Error
A
3
47%
B
0
21%
C
2
22%
D
1
10%
Solution:
Given
⎣
⎡
x
y
z
⎦
⎤
=
40
1
⎣
⎡
5
−
5
10
10
−
2
−
4
−
5
13
6
⎦
⎤
⎣
⎡
5
0
5
⎦
⎤
=
40
1
⎣
⎡
25
−
25
50
+
0
+
0
+
0
−
25
+
65
+
30
⎦
⎤
=
40
1
⎣
⎡
0
40
80
⎦
⎤
=
⎣
⎡
0
1
2
⎦
⎤
⇒
x
=
0
,
y
=
1
,
z
=
2
∴
x
+
y
+
z
=
0
+
1
+
2
=
3