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Find two positive numbers x and y such t...

Find two positive numbers x and y such that `x + y = 60`and `x y^3`is maximum.

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Verified by Experts

Let `P=xy^3`
It is given that `x+y=60`
`=>x=60-y`
`P=(60-y)y^3`
...
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NCERT-APPLICATION OF DERIVATIVES-EXERCISE 6.5
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