Math Is Fun Forum

Hannibal lecter

Member

Registered: 2016-02-11

Posts: 392

domain and range

see the domain from the following photo graph is [-2,2] and the Range is [2,-2]
the question can I swap the numbers of the Range? = [-2,2]
if I can't, why? pls explain

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Wisdom is a tree which grows in the heart and fruits on the tongue

Bob

Administrator

Registered: 2010-06-20

Posts: 10,136

Re: domain and range

Yes you can and I think you should so that the range starts with the lower bound and goes up to the upper bound [lower,upper]

This is the convention that is usually adopted.  People should understand if you reverse it, the same as they would if you make a small speling mistake.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob