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If a,b,c are in A.P. prove that (i) b+...

If a,b,c are in A.P. prove that
(i) `b+c,c+a,a+b` are also in A.P.
(ii) `1/(sqrt(b)+sqrt(c)),1/(sqrt(c)+sqrt(a)),1/(sqrt(a)+sqrt(b))` are also in A.P.

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