Rainer Weikusat <rweikusat@???> writes:
> KatolaZ <katolaz@???> writes:
>> On Fri, Jun 24, 2016 at 09:44:31PM +0200, Irrwahn wrote:
>>> On Fri, 24 Jun 2016 19:41:54 +0100, Rainer Weikusat wrote:
>>> [...]
>>> > If you want
>>> > a mathematical example, picture somone always writing
>>> >
>>> > x / (1/n)
>>> >
>>> > instead of
>>> >
>>> > x * n
>>>
>>> Not to undermine your point, just a minor quibble: The example
>>> is flawed in that above terms are not quite equivalent, as they
>>> differ in their respective domain of definition.
>>
>> ..... not considering the fact that if n happens to be an integer, the
>> first expression almost always raises a floating point exception
>> (Division by zero), unless n==1... :)
>
> The domain remark was, although correct, already pretty much besides the
> point but this misses it completely: I wrote mathematical example
> because this was meant to be a mathematical example. Provided that 1/n
> is defined, that is n is not 0, x / (1 / n) is by definition the same as
> x * n. That's 6th form (in Germany) fractional arithmetic: Dividing a
> fraction by another fraction is accomplished by the first fraction by

                                                 ^^^^^
                                                 multiplying missing
                                                 here