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Topic: Help with formula (revised question)
Replies: 7   Last Post: Nov 20, 2013 8:15 PM

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William Elliot

Posts: 1,703
Registered: 1/8/12
Re: Help with formula (revised question)
Posted: Nov 20, 2013 3:52 AM
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On Wed, 20 Nov 2013, Robert Crandal wrote:

> Here is the new data set:
>
> X Y
> -- --
> 0.0 1
> 0.1 1
> 0.5 1
> 0.9 1
> 1.0 1
> 1.03 2
> 1.5 2
> 1.8 2
> 2.0 2
> 2.3 3
> 3.0 3
> 3.2 4
>
> Can this data be represented with a formula
> that only uses either addition, subtraction,
> multiplication, division, modulus, or the power (^)
> function, or any combination of these?


No, the function is ceiling x = -floor -x. It's a well accepted function even
availible in some computer languages. Before computers, mathematicians used
[x] for the greatest interger <= x, which computer languages call floor
or int(), as in basic.




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