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Mathematics
Problem
Find unit vectors perpendicular to the plane determined by the points
P
(
1
,
−
1
,
2
)
,
Q
(
2
,
0
,
−
1
)
and
R
(
0
,
2
,
1
)
P(1, -1, 2), Q(2, 0, -1) \text{ and } R(0, 2, 1)
P
(
1
,
−
1
,
2
)
,
Q
(
2
,
0
,
−
1
)
and
R
(
0
,
2
,
1
)
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