2007-06-08 03:31:31 · 3 answers · asked by marco c 1 in Science & Mathematics ➔ Mathematics
Well, I've already answered a similar question you posted at http://answers.yahoo.com/question/index;_ylt=AoanTkCr.uIwjCMTU2BsDsoCxgt.?qid=20070608073317AAMvRo5
The answer is basically the same. I've already explained how we use functions. Now, let's see a very simple example of how relations can be used. Suppose you are a car dealer. Then, you have to keep records of the cars your customers bought. Then, you have a relation: to each customer, there can correspond several cars, not just one. So we don't have a function, but a relation. Something like that:
Mr Smith - A Ford Station Wagon and a Honda
Mrs Lane - A ford Fiesta.
Mr Klein - A Mercedes Benz, 3 Porsches, 7 Ferraris
And so on.
2007-06-08 04:07:17 · answer #1 · answered by Steiner 7 · 0⤊ 0⤋
It's encouraging abstract thought.
2007-06-08 10:39:04 · answer #2 · answered by Argyles 4 · 0⤊ 0⤋
I guess that depends on what you do.....
2007-06-08 10:34:22 · answer #3 · answered by *♥Tarita♥* 3 · 0⤊ 0⤋