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Math Help - functions again HEEEELLLLP!!!!!!!

  1. #1
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    Exclamation functions again HEEEELLLLP!!!!!!!

    GRAPH. my bad.
    f(x)= 3, x<-2
    f(x)=x^2+4x+4, x>-2
    Last edited by iheartthemusic29; August 14th 2007 at 12:56 PM.
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by iheartthemusic29 View Post
    f(x)= 3, x<-2
    f(x)=x^2+4x+4, x>-2
    What are you supposed to do with these? You haven't asked a question!

    -Dan
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    Graph. sorry. so I don't know how to enter the equations into my TI84 plus calculator.
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by iheartthemusic29 View Post
    GRAPH. my bad.
    f(x)= 3, x<-2
    f(x)=x^2+4x+4, x>-2
    Quote Originally Posted by iheartthemusic29 View Post
    Graph. sorry. so I don't know how to enter the equations into my TI84 plus calculator.
    I sincerely hope you aren't having difficulties sketching the first one by hand! That's just a constant function.

    If worst comes to worst, just pick a bunch of x values and find out f(x) and put it all on a graph.

    For the second one, I'll give you a hint: It's a parabola and x^2 + 4x + 4 = (x + 2)^2

    -Dan
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    I'm supposed to graph using my calculator first and I don't know how to enter the inequalities.
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by iheartthemusic29 View Post
    I'm supposed to graph using my calculator first and I don't know how to enter the inequalities.
    After you input your equation into the "Y=" editor, you are looking for a screen titled "window." The window allows you to set lower bounds, upper bounds, etc. on the graphing.

    -Dan
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