# Re: The seven step series

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On 21 Aug 2009, at 01:24, meekerdb @dslextreme.com wrote:```
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>
> On Thu, Aug 20, 2009 at 12:32 PM, Bruno Marchal<marc...@ulb.ac.be>
> wrote:
>>
>>
>> Hi,
>>
>> I give the solution of the first of the last exercises.
> ...
>> This motivates the definition of the following function from N to N,
>> called factorial.
>> factorial(0) = 1, and factorial(n) = n*(n-1)*(n-2)*(n-3) * ... *1, if
>> is n is different from 0.
>>
>> Note this: if n is different from 0, for each n we have that
>> fact(n) =
>> n*fact(n).
>
> Of course you meant fact(n)=n*fact(n-1).

Yes, indeed.

Note that later we will see stronger form of recursion, but here it is
just a "typo" mistake.

Bruno

http://iridia.ulb.ac.be/~marchal/

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