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Math Forum » Discussions » Math Topics » alt.algebra.help.independent

Topic: composite functions
Replies: 3   Last Post: May 2, 2005 12:23 AM

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Paul Sperry

Posts: 1,392
Registered: 12/6/04
Re: composite functions
Posted: May 1, 2005 1:57 PM
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In article <36idnaW5Qa_FiujfRVn-vA@giganews.com>, bill c
<bcary93@yahooDOTNOTDASHcom> wrote:

> With f(x)=2-5x, g(x)=(2-x)/5 I need to dtermine if the functions are
> inverses.
>
> I see that f(g(x))=x but
>
> It looks like g(f(x))= (2-2-5x)/5 =? -x


g(f(x)) = (2 - (2 - 5x))/5

[...]

--
Paul Sperry
Columbia, SC (USA)



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