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

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Bill Taylor

Posts: 1,909
Registered: 12/8/04
Re: -1 x -1 ?
Posted: Sep 18, 1999 12:03 AM
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"Guillermo Phillips" <Guillermo.Phillips@marsman.demon.co.uk> writes:

|> Why should -1 x -1 = 1 ?

Consistency with the distributive law of arithmetic.

But the only reason I'm answering this, apart from the fact that we Bills
ought to help each other out, is to relay this Ogden Nash poem...

"Minus times minus results in a plus,
The reason for this, we needn't discuss."

Bill Taylor W.Taylor@math.canterbury.ac.nz
There are two rules for success in life:-
Rule #1: Don't tell people everything you know.

A chicken is the shortest distance between two eggs.

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