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Re: Math game
Posted: Sat Nov 13, 2010 5:53 pm
by Paw
Well, it's xx so it's x raised to x'th power. So it's the same x.
Re: Math game
Posted: Sat Nov 13, 2010 7:02 pm
by Sikamies
Paw wrote:Well, without really any thinking, but maybe it's 1/3?
Not correct, but not far from the correct answer.
Paw wrote:Well, it's xx so it's x raised to x'th power. So it's the same x.
Yes, that's what I mean.
Re: Math game
Posted: Mon Nov 15, 2010 5:20 pm
by Sikamies
Hmm, maybe you need a hint.
The function can be modified with some properties of the exponential function and logarithm:
x
x = e
x * ln x, where ln is the natural logarithm
http://en.wikipedia.org/wiki/Natural_logarithm.
Re: Math game
Posted: Tue Nov 16, 2010 4:52 am
by bduddy
I just don't really understand the question... if you set x to a specific value, then how can the function that only includes x have a "minimum"?
Re: Math game
Posted: Tue Nov 16, 2010 1:07 pm
by Hangman
1/e
In case that's correct somebody can come up with a question.
Re: Math game
Posted: Tue Nov 16, 2010 2:02 pm
by Sikamies
Hangman wrote:1/e
In case that's correct somebody can come up with a question.
That's correct
EDIT: and
bduddy wrote:I just don't really understand the question... if you set x to a specific value, then how can the function that only includes x have a "minimum"?
x is not set to specific value, it's still the variable of the function.