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Problem
Problem
If two vectors are
A
=
2
i
^
+
j
^
−
k
^
A = 2\hat{i} + \hat{j} - \hat{k}
A
=
2
i
^
+
j
^
−
k
^
and
B
=
j
^
−
4
k
^
B = \hat{j} - 4\hat{k}
B
=
j
^
−
4
k
^
. By calculation, prove that
A
×
B
A \times B
A
×
B
is perpendicular to both
A
A
A
and
B
B
B
.
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