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Mathematics
Problem
If
1
b
+
c
\frac{1}{b+c}
b
+
c
1
,
1
c
+
a
\frac{1}{c+a}
c
+
a
1
,
1
a
+
b
\frac{1}{a+b}
a
+
b
1
are in A.P. then prove that
a
2
a^2
a
2
,
b
2
b^2
b
2
,
c
2
c^2
c
2
are in A.P.
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