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 Posted: Thu Sep 03, 2009 6:17 pm
I kinda do nows...
Kaddy learned all of this last year but she didn't understand any of it...^^"
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Posted: Thu Sep 03, 2009 6:19 pm
Hehe... Then Eno'll help you understand it so you can do it better. x3
Just tell me if you have some more issues... I'll double check if you're nervous too.
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Posted: Thu Sep 03, 2009 6:28 pm
Okays x3
Wah, Kaddy may not have time to finish her homework again tonight...TT.TT
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Posted: Thu Sep 03, 2009 6:30 pm
That sucks dear...
Can't you stay up with that as an excuse?
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Posted: Thu Sep 03, 2009 6:43 pm
-shakes head- Kaddy can't get up in the mornings as is...
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Posted: Thu Sep 03, 2009 6:44 pm
Ah...
You have a homeroom/study hall to finish it in?
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Posted: Thu Sep 03, 2009 7:35 pm
Not much time. We have a class first period/homeroom. So...
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Posted: Thu Sep 03, 2009 7:48 pm
Okay... hopefully you can get it done dear...
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Posted: Sat Sep 05, 2009 9:43 pm
...this hasn't been opened in two nights? >.>" Brother, you've been slacking!
We're open nows, although no one is on...
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Posted: Sun Sep 06, 2009 7:17 pm
Opening.
So sorry about that Kaddy; I wasn't here last night and the night before I conked out on the couch...
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Posted: Mon Sep 07, 2009 5:26 pm
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Posted: Tue Sep 08, 2009 5:39 pm
Open...
Nows...how does Kaddy find the domain of a (fog)(x) function? >.>"
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Posted: Tue Sep 08, 2009 5:49 pm
ƒ(g(x))? Okay...
Well, the most sure way to get it right is to use a number line. But I'll just explain it; the number line's really only a way to show it.
find the domain of ƒ(x) and the domain of g(x). Where they coincide (share terms) is the domain of f(g(x)). I think.
Example:
Domain of ƒ(x) - (-∞,∞)
Domain of g(x) - (-10,50)
Domain of (fog)(x) - (-10,50)
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Posted: Tue Sep 08, 2009 5:56 pm
Nn, that...made Kaddy confuzzled xP THe example she showed us was this:
f(x)=x-4
g(x)=1/x^2
(1/x^2)-4
Domain: x (isn't equal to) 0
That made kaddy confuzzled. She said the only thing we're supposed to care about is the bottom part of the fraction...
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Posted: Tue Sep 08, 2009 6:03 pm
That's to find the domain of a fraction...
Fractions domain is anything where the bottom doesn't equal zero. Because n/0 is a nonexistant number.
That's also to find it by combining fractions.
You see, you replace x in the function f(x) with g(x). (fog)(x)=(1/x^2)-4. So you figure out the domain of the part of the function that's domain isn't infinity.
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