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Mathematics
Mathematics
Problem
If
a
=
(
1
,
−
2
,
3
)
\mathbf a=(1,-2,3)
a
=
(
1
,
−
2
,
3
)
and
b
=
(
4
,
0
,
−
1
)
\mathbf b=(4,0,-1)
b
=
(
4
,
0
,
−
1
)
, then
a
×
b
\mathbf a\times\mathbf b
a
×
b
equals a)
−
2
i
^
−
13
j
^
−
8
k
^
-2\hat{i}-13\hat{j}-8\hat{k}
−
2
i
^
−
13
j
^
−
8
k
^
b)
2
i
^
+
13
j
^
+
8
k
^
2\hat{i}+13\hat{j}+8\hat{k}
2
i
^
+
13
j
^
+
8
k
^
c)
2
i
^
−
13
j
^
+
8
k
^
2\hat{i}-13\hat{j}+8\hat{k}
2
i
^
−
13
j
^
+
8
k
^
d)
2
i
^
+
13
j
^
−
8
k
^
2\hat{i}+13\hat{j}-8\hat{k}
2
i
^
+
13
j
^
−
8
k
^
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