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Mathematics
Problem
Let
a
⃗
=
2
i
+
3
j
−
k
\vec{a}=2\mathbf{i}+3\mathbf{j}-\mathbf{k}
a
=
2
i
+
3
j
−
k
and
b
⃗
=
i
−
2
j
+
2
k
\vec{b}=\mathbf{i}-2\mathbf{j}+2\mathbf{k}
b
=
i
−
2
j
+
2
k
. Find the scalar projection of
a
⃗
\vec{a}
a
on
b
⃗
\vec{b}
b
. a)
−
6
14
-\dfrac{6}{\sqrt{14}}
−
14
6
b)
−
2
-2
−
2
c)
2
2
2
d)
−
6
-6
−
6
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