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The minimum value of px+py when xy=r^(2)...

The minimum value of `px+py` when `xy=r^(2)` is equal to

A

`2rsqrt(pq)`

B

`2pqsqrtr`

C

`-2rsqrt(pq)`

D

`sqrt(pq)`

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KVPY PREVIOUS YEAR-MOCK TEST 4-EXERCISE
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