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Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: -1 x -1 ?
Replies: 29   Last Post: May 13, 2009 9:01 AM

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Jim Hunter

Posts: 667
Registered: 12/7/04
Re: -1 x -1 ?
Posted: Sep 20, 1999 6:46 PM
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Guillermo Phillips wrote:
>
> Hello All,
>
> Here's something I've always wondered (perhaps in my naivety). Why
> should -1 x -1 = 1?
> I appreciate that lots of nice things come from this, but what's the
> fundamental reason for it?

It's based on that if you're walking the wrong way,
and you turn around, then you'll be walking the right way.

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