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Mathematics
Mathematics
Problem
Prove that
a
×
(
b
×
c
)
+
b
×
(
c
×
a
)
+
c
×
(
a
×
b
)
=
0
\mathbf{a} \times (\mathbf{b} \times \mathbf{c}) + \mathbf{b} \times (\mathbf{c} \times \mathbf{a}) + \mathbf{c} \times (\mathbf{a} \times \mathbf{b}) = 0
a
×
(
b
×
c
)
+
b
×
(
c
×
a
)
+
c
×
(
a
×
b
)
=
0
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