If pqr =1, then prove that :

1/ ( 1+p+q ^{-1} ) + 1 / (1+q+r^{-1} ) + 1 / (1+r + p ^{- 1} ) = 1

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Kindly refer the following link :

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If pqr =1, then prove that :

1/ ( 1+p+q ^{-1} ) + 1 / (1+q+r^{-1} ) + 1 / (1+r + p ^{- 1} ) = 1

^{ }

Kindly refer the following link :

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