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Mathematics 7 Online
OpenStudy (faiqraees):

Suppose a series with only positive integers such that the sum of the terms is 1000. What can be the largest product of all the terms? @ganeshie8 a little help here please

OpenStudy (faiqraees):

Suppose a series with only positive integers such that the sum of the terms is 1000. What can be the largest product of all the terms?

OpenStudy (drmoss):

:O

OpenStudy (faiqraees):

My initial response was 2^500 but that is not correct

ganeshie8 (ganeshie8):

.

OpenStudy (evoker):

I think for rationals it might be the square root to the square root power.

OpenStudy (evoker):

So I would lean towards 32^8 * 31^24

OpenStudy (faiqraees):

nope it has to be bigger than 2^500

OpenStudy (evoker):

Hmm can't explain why but I found on a bit of research says split it into as many 3's as possible and 2's with the remainder.

OpenStudy (evoker):

so possibly 3^333 or 3^332*2^2

OpenStudy (evoker):

ah second case is larger of those.

OpenStudy (faiqraees):

@Evoker Your second choice is correct but how??

OpenStudy (evoker):

Ah well I did a bit of research, to be honest, the best explanation I can find uses Calculus, I'll try to find the article I found and post a link.

OpenStudy (faiqraees):

But it isn't a proof. In next part they are asking me to prove it

OpenStudy (evoker):

Ah the proof comes in the calculus bit, I believe

OpenStudy (evoker):

basically you need to split it into pieces as close to e as possible

OpenStudy (evoker):

3 being the closest number to e.

OpenStudy (faiqraees):

Tell me one thing. Why does the behaviour of a function remains same even if I apply logarithms on the whole function? Like the value of x for which f'(x) is 0 is same even in g'(x) where g(x) is (ln(f(x))

OpenStudy (faiqraees):

Nevermind got it

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