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Math problem

Asked by kelseyxx about 1 year ago, 5 answers.

Find f(g(x)) , if
f(x) = 2x +3
g(x) = 3/x+1 [ the / sign is drawn as a line in the book like how you would see in fractions. ]

How would you do this problem? I'd also rather have an explanation than a straight up answer so I learn this. =)

shirt Answered by yellowkitty on Nov 12, 2008, 07:14PM
30 answers

I think this is slope stuff... but I dont remeber how to to... my teacher sucked

Answered by kelseyxx on Nov 12, 2008, 07:15PM
73 answers

Oh these are compositions of functions, which relates to domain and range. Thanks anyways for trying. :O

kitty Answered by ty on Nov 12, 2008, 07:19PM
10179 answers
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I think...

= 2 (3/x+1) + 3

= 6/x+1 +3

Answered by kelseyxx on Nov 12, 2008, 07:26PM
73 answers

ty -- those are the steps I performed on my previously easier compositions of functions, but this problem has a fractional line running though it, and the book answer indicates
3x + 9 over x + 1 ( 'over' as in fraction or division line. )

but.. I guess I will just attempt to figure out these problems on my own. xD thanks anyways.

kitty Answered by ty on Nov 12, 2008, 10:04PM
10179 answers
Advisor-small

6/x+1 + 3

then you open it up... which equals 3x+9/x+1

to add fractions this page might help http://www.mathsisfun.com/fractions_addition.html

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