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August 3rd, 2013, 06:18 AM   #1
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Multiplication

I'm kinda confused =)
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August 3rd, 2013, 06:32 AM   #2
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Re: Multiplication

Hello, Drake!

Quote:
I'm kinda confused.[color=beige] . [/color][color=blue]So am I.[/color]

[color=beige]. . [/color]

Are we to assume that we are to simplify the expression?




[color=beige]. . . . . . [/color]

[color=beige]. . . . . . [/color]

[color=beige]. . . . . . [/color]

[color=beige]. . . . . . [/color]

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August 3rd, 2013, 06:47 AM   #3
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Re: Multiplication

Yes, exactly what I've found. However my book gives the answer 3
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August 3rd, 2013, 06:49 AM   #4
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Re: Multiplication

I can post the initial problem if it's needed.
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August 3rd, 2013, 08:25 AM   #5
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Re: Multiplication

Hello, "Drake!

Quote:
I can post the initial problem if it's needed.

Do you mean that what you gave us was not the inital problem?

That might explain where the "3" comes from . . .

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August 3rd, 2013, 09:23 PM   #6
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Re: Multiplication

Quote:
Originally Posted by soroban
[color=beige]. . . . . . [/color]
Well, IF answer is 3, then obvious that x=1.
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August 5th, 2013, 06:16 AM   #7
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Re: Multiplication

Well, yes. That was only a part of the solution. Anyways, here is the problem:



We're asked to find all real values of x satisfying this equation.

To solve it, the book used AM > GM inequality.



And then it says without any further explanation

And

Thus x=1
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