algebra take home test

[Mallarddrake44]

i know this shit is pretty basic but i have no idea how to do it missed class...

1. if f(x)=x(2 Squared)+5x and g(x)=x+2, find (f (composition) g)(3)

thats x squared and at the end composition is a little circle in the middle, dunno how to make either of them..

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[BigJ]

http://www.algebralab.org/less...lationsComposition.xml

There's your lesson. Come back when you've done some work.

 

[QED]

The composition of two functions simply evaluating one first, and using that as the argument for the other.
In other words, f (composition) g(x) is simply equal to f( g(x) ).

In this case, to evaluate f (composition) g (3) , you must first evaluate g(3). Once you know g(3), evaluate f(x) there.

 

[Azraele]

First, why did you miss class?

Second, I'm pretty sure schools consider getting help for tests cheating.

 

[OdiN]

If you are given an open book test, you will forget your book.

Corollary:

If you are given a take home test, you will forget where you live.