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Math Help - need help with functions please

  1. #1
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    Angry need help with functions please

    first of all i'd like to apologise as its my first 2nd post and maybe wrong section..

    here is the problem i've been having, basically ive been following this tutorial in order to learn functions, it was going fine until this..
    need help with functions please-snap-2012-12-25-17.31.54.png

    Could someone explain me how is he getting those output answers... i cant really get it..
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  2. #2
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    Re: need help with functions please

    Quote Originally Posted by acidgfx View Post
    first of all i'd like to apologise as its my first 2nd post and maybe wrong section..
    No need to apologize, this is also my first 4,297th post.

    Quote Originally Posted by acidgfx View Post
    here is the problem i've been having, basically ive been following this tutorial in order to learn functions, it was going fine until this..
    Click image for larger version. 

Name:	Snap 2012-12-25 at 17.31.54.png 
Views:	12 
Size:	123.1 KB 
ID:	26347

    Could someone explain me how is he getting those output answers... i cant really get it..
    Read Wikipedia about Geometric series.
    Thanks from acidgfx
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  3. #3
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    Re: need help with functions please

    The function is an infinite GP
    Sum of GP is given by a/(1-r) where a is the first term and r the common ratio. Now I am sure you would have got it.
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