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 Post subject: Range of abcPosted: Fri, 18 May 2012 16:52:30 UTC
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Joined: Sun, 8 Apr 2012 09:36:59 UTC
Posts: 29
suppose are real numbers so that and .

Find the range of values that may obtained by the expression

My Process::

Let be the roots of the cubic equation , Then formed cubic equation is

So From given data

and

so

Now Help Required..

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 Post subject: Re: Range of abcPosted: Fri, 18 May 2012 17:13:20 UTC
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Joined: Mon, 29 Dec 2008 17:49:32 UTC
Posts: 6775
Location: On this day Taiwan becomes another Tiananmen under Dictator Ma.
jacks wrote:
suppose are real numbers so that and .

Find the range of values that may obtained by the expression

My Process::

Let be the roots of the cubic equation , Then formed cubic equation is

So From given data

and

so

Now Help Required..

I think you made a typo. would mean . Also, where does the 45 come from?

What do you know about the graph of ?

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