[sdiy] SDIY MATH GOALS--need real help!

[Richard Wentk]

On 1 Mar 2009, at 22:57, Tim Stinchcombe wrote:

>> Sometimes it almost seems like magic that this calculus stuff
>> works, but it always does!
>
> So magic in fact that it was about 175 years after calculus was  
> invented
> before we had a decent definition of what a limit really meant, and  
> what a
> real number really is, which then proved that what they'd been  
> using for the
> last 175 years was actually correct! Amazing.

Yeah, well - it's maths. It just need to work.

The making sense part is optional. :)

Richard