Question

Find two numbers whose sum is 16 and sum of whose cube​

Answer 1

Answer:

answer hai eight

ok

hope it will help you

Answer 2

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We have to maximise x³+y³ and we have x+y=16

Put x = 16 − y in x³+y³

we get f(y) = 48y²−768y+4096

First derivative is given by

 f(y) = 96y−768

Putting this to zero we get, y=8

f(y)=96

Given that second derivative is positive

So given function will have minima when y=8

So x=16−8=8