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यदि a^(2)+2bc, b^(2)+2ca, c^(2)+2ab सम...

यदि `a^(2)+2bc, b^(2)+2ca, c^(2)+2ab` समान्तर श्रेढ़ी में है, तो सिद्ध कीजिए की `(1)/(b-c), (1)/(c-a), (1)/(a-b)` भी समान्तर श्रेढ़ी में हैं।

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