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Mathematics
Mathematics
Problem
4. Show that the points
(
2
,
3
,
4
)
,
(
−
1
,
−
2
,
1
)
,
(
5
,
8
,
7
)
(2,3,4),(-1,-2,1),(5,8,7)
(
2
,
3
,
4
)
,
(
−
1
,
−
2
,
1
)
,
(
5
,
8
,
7
)
are collinear.
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