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Mathematics 15 Online
OpenStudy (anonymous):

Someone help me for the love of god!!!!!!! Two functions, f(x) = 2x2 + 3 and g(x) = x + 1. The answer to the inside equation would be? Select one: a. 1 b. 2 c. 3 d. 11 Which statement is true: Select one: a. The inside function is the third quantity in the relation. b. The inside function is the first quantity in the relation. c. The inside quantity is the second quantity in the relation. d. The outside quantity is the second quantity in the relation.

OpenStudy (fortytherapper):

Is this composite, like (fog)(x)?

OpenStudy (fortytherapper):

So there is a definite answer? Because (fog)(x) would be 2(x-1)^2 + 3 But where would we go from there?

OpenStudy (anonymous):

i dont know

OpenStudy (fortytherapper):

Yeah, that's whats confusing. No x nor y value was given in the problem

OpenStudy (anonymous):

how do we solve it?

OpenStudy (fortytherapper):

The inside equation is g(x) if that's what you meant

OpenStudy (fortytherapper):

That I don't know because variables amounts weren't giving. It's like saying y=x, what is x. Not enough was given

OpenStudy (anonymous):

http://www.wolframalpha.com/widgets/view.jsp?id=d6128a5c44f82653361a48a60cbc47c2 heres this link but i dont know what im doing wrong

OpenStudy (fortytherapper):

Just to make sure, f(x) is 1/(x+1) and g(x) is 3x+1?

OpenStudy (anonymous):

1/3x+2?

OpenStudy (fortytherapper):

If so, to find (fog)(x), aka f(g(x)), you plug in g(x) where ever you see an x in f(x) So, 1/((3x+1)+1) as your composite function. To find an answer, an X value needs to be given, so you can plug that into x and find your answer

OpenStudy (anonymous):

i dont get it?

OpenStudy (fortytherapper):

In other words, in terms of composite functions, this is impossible to solve because information is insufficient

OpenStudy (anonymous):

OpenStudy (anonymous):

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