Tubidy
    If a1,a2,a3,...are in ap then 1/a1^1/2+a2^1/2 +1/a2^1/2+a3^1/2+....=

    If a1,a2,a3,...are in ap then 1/a1^1/2+a2^1/2 +1/a2^1/2+a3^1/2+....=

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