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#1 2008-03-11 22:31:18
- tony123
- Member
- Registered: 2007-08-03
- Posts: 230
solve
solve
i know its 4 but how
Last edited by tony123 (2008-03-11 22:33:29)
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#2 2008-03-13 20:54:23
- gyanshrestha
- Member
- Registered: 2007-11-06
- Posts: 41
Re: solve
hence x=4
http://gyan.talkacademy.com.np
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#3 2008-03-13 21:26:11
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: solve
That method is just a way of showing that the answer is 4, rather than analytically finding that the answer is 4.
I can't think of a way to solve this other than by inspection, but what I can do is observe that the function is strictly increasing, and so 4 is its unique solution.
Why did the vector cross the road?
It wanted to be normal.
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