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Mathematics
Mathematics
Problem
Let
p
=
(
1
,
4
,
−
2
)
\mathbf p = (1,4,-2)
p
=
(
1
,
4
,
−
2
)
and
q
=
(
3
,
−
1
,
5
)
\mathbf q = (3,-1,5)
q
=
(
3
,
−
1
,
5
)
. Calculate
(
2
p
−
q
)
⋅
(
p
+
q
)
(2\mathbf p-\mathbf q)\cdot(\mathbf p+\mathbf q)
(
2
p
−
q
)
⋅
(
p
+
q
)
. a)
44
44
44
b)
−
14
-14
−
14
c)
−
4
-4
−
4
d)
7
7
7
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