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Mathematics
Mathematics
Problem
Vectors
a
=
⟨
2
,
k
,
−
1
⟩
\mathbf{a}=\langle 2, k, -1\rangle
a
=
⟨
2
,
k
,
−
1
⟩
and
b
=
⟨
3
,
1
,
4
⟩
\mathbf{b}=\langle 3, 1, 4\rangle
b
=
⟨
3
,
1
,
4
⟩
are perpendicular. Determine
k
k
k
. a)
−
10
-10
−
10
b)
2
2
2
c)
−
2
-2
−
2
d)
−
1
-1
−
1
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