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Mathematics
Problem
If the vectors
4
i
^
+
11
j
^
+
m
k
^
4\hat{i} + 11\hat{j} + m\hat{k}
4
i
^
+
11
j
^
+
m
k
^
,
7
i
^
+
2
j
^
+
6
k
^
7\hat{i} + 2\hat{j} + 6\hat{k}
7
i
^
+
2
j
^
+
6
k
^
and
i
^
+
5
j
^
+
4
k
^
\hat{i} + 5\hat{j} + 4\hat{k}
i
^
+
5
j
^
+
4
k
^
are coplanar, then
m
m
m
is equal to a. 38 b. 0 c. 10 d. -10
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