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    anthemous's Avatar
    anthemous Posts: 4, Reputation: 1
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    #1

    Oct 27, 2011, 01:58 AM
    Functions
    Write, as single function, gf(x) in terms of x.

    f(x)=2x-1 g(x)=3/x+1
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 27, 2011, 07:47 AM
    To write this as a single function you simply substute the f(x) function for the 'x' terms in the g(x) function.

    Here's an example to illustrate: if f(x) = 3x+2, and g(x) = sin(x), then g(f(x)) = sin(3x+2). Can you take it from here?
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    anthemous Posts: 4, Reputation: 1
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    #3

    Oct 27, 2011, 07:53 AM
    Sorry this doesn't really help can you please solve the specific one I have, so that I can understand it better. Thanks!
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #4

    Oct 27, 2011, 08:11 AM
    Quote Originally Posted by anthemous View Post
    sorry this doesn't really help can u please solve the specific one i have, so that i can understand it better. thnx!
    No - our policy on this site is to not do your homework for you. Show us your effort to solve this yourself and we'll check it for you. And please do not indicate that my response is "unhelpful" - that is to be used only if a response is incorrect.
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    anthemous Posts: 4, Reputation: 1
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    #5

    Oct 27, 2011, 10:21 AM
    Look I can't solve the specific problem if you can't help then don't bother trying! The problem you have showed me is the there way round which is much easier! So if you want me not to mark your answer as unhelpful then answer with something helpful. Thanks mate!
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