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#1 2007-09-04 09:39:24
- tony123
- Member
- Registered: 2007-08-03
- Posts: 229
f (x)
f (x) function from z to z
x is integer
f(3)=70, f(4)=180,f(5)=470, f(6)=1230
find f(x)
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#2 2007-09-04 10:21:43
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: f (x)
Heres one possible solution:
where
NB: Note that A, B, C, D are integers for all integers x. Yes, even A is an integer because the product of three consecutive integers is divisible by 6.
There may be other possible solutions.
Last edited by JaneFairfax (2007-09-04 10:27:32)
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