If -b-c-c-a- -a-b- are in AP show that 1-b-c- 1-c-a- 1-a-b- are in AP-

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If (b-c)²,(c-...

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If (b-c)²,(c-a)², (a-b)² are in AP show that 1/(b-c), 1/(c-a), 1/(a-b) are in AP.

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