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#1 2006-04-30 01:51:51
- RauLiTo
- Member
- From: Bahrain
- Registered: 2006-01-11
- Posts: 142
X2x2
i am a student in my second year in a secondry school maybe i didn't learn how to solve this type of equation or maybe i don't know how ... my friend asked me to solve it ... who can solve it please?
X ^ 2 = 2 ^ X
thanks
ImPo$$!BLe = NoTH!nG
Go DowN DeeP iNTo aNyTHinG U WiLL FinD MaTHeMaTiCs ...
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#2 2006-04-30 01:59:42
- mathsyperson
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- Registered: 2005-06-22
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Re: X2x2
I have no idea how you would solve that algebraically, but I can tell that there is a solution of 4.
I don't *think* there are any others.
Edit: ...But there are. I can't believe I missed X=2 >_<
Why did the vector cross the road?
It wanted to be normal.
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#3 2006-04-30 02:42:20
- Ricky
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- Registered: 2005-12-04
- Posts: 3,791
Re: X2x2
2, 4, and -0.766664695962
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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#4 2006-04-30 03:13:04
- RauLiTo
- Member
- From: Bahrain
- Registered: 2006-01-11
- Posts: 142
Re: X2x2
how do they solve it ?
ImPo$$!BLe = NoTH!nG
Go DowN DeeP iNTo aNyTHinG U WiLL FinD MaTHeMaTiCs ...
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#5 2006-04-30 03:19:50
- Patrick
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- Registered: 2006-02-24
- Posts: 1,005
Re: X2x2
Try by hand/head, use a brute force method, etc...
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#6 2006-04-30 03:38:08
- Ricky
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- Registered: 2005-12-04
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Re: X2x2
Graphically is the easiest way to go.
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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#7 2006-04-30 03:50:07
- Patrick
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Re: X2x2
aha, forgot that one 
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#8 2006-04-30 20:24:16
- krassi_holmz
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- Registered: 2005-12-02
- Posts: 1,905
Re: X2x2
You talk about graphics, but I don't see any.
Here's one:
Last edited by krassi_holmz (2006-04-30 20:25:07)
IPBLE: Increasing Performance By Lowering Expectations.
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#9 2006-04-30 20:31:07
- krassi_holmz
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Re: X2x2
Very interesting function.
What about a^x-x^a?
IPBLE: Increasing Performance By Lowering Expectations.
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#10 2006-04-30 20:38:07
- krassi_holmz
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- Registered: 2005-12-02
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Re: X2x2
3^x-x^3:
Last edited by krassi_holmz (2006-04-30 20:39:50)
IPBLE: Increasing Performance By Lowering Expectations.
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