iValianT
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| Joined: 21 Aug 2010 |
| Total Posts: 58381 |
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| 13 Sep 2013 05:38 PM |
sqrt(20x)/sqrt(x^2 - 4)
isnt it [3, infinity)
looking for grmva too |
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| 13 Sep 2013 05:38 PM |
is this algebra 2
Domain is all the X's while Range is all the Y's. |
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Dev8
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| Joined: 06 Jul 2008 |
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iValianT
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| Joined: 21 Aug 2010 |
| Total Posts: 58381 |
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| 13 Sep 2013 05:40 PM |
| no, you cant have the denominator be zero |
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mygame43
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| Joined: 23 Aug 2008 |
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iValianT
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| Joined: 21 Aug 2010 |
| Total Posts: 58381 |
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| 13 Sep 2013 05:40 PM |
| nor can you have a negative inside a square root |
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Blizzaria
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| Joined: 22 Nov 2012 |
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| 13 Sep 2013 05:40 PM |
da frik kind of math is this
-Fix lighting on profiles!!!-
SIGN THIS PETITION: http://www.roblox.com/Forum/ShowPost.aspx?PostID=110357168 |
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iValianT
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| Joined: 21 Aug 2010 |
| Total Posts: 58381 |
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| 13 Sep 2013 05:41 PM |
its math?
lol?
@mygame
ok let me type that in |
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| 13 Sep 2013 05:42 PM |
| that is what I learned in algebra 2 |
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iValianT
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Dev8
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| 13 Sep 2013 05:43 PM |
this is definitely trigonometry..
and my final answer is
x =/= 0 |
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iValianT
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| Joined: 21 Aug 2010 |
| Total Posts: 58381 |
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| 13 Sep 2013 05:45 PM |
| and you put that in interval notation how? |
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iValianT
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| Joined: 21 Aug 2010 |
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| 13 Sep 2013 05:46 PM |
xd
x=/=0 is wrong, it also can be 2 or -2 |
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Dev8
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| 13 Sep 2013 05:49 PM |
| this isnt trig smart one. its borderline calculus (aka pre-calc) |
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Dev8
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| 13 Sep 2013 05:50 PM |
yo we on Roblox quit doin hw anyways
Stats > Calc
That's why I don't know this :P |
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| 13 Sep 2013 05:56 PM |
20x >= 0
sqrt(x^2-4)>=0 BUT x^2-4 >0 So...
x^2-4 = (x-2)(x+2)
x = {2,-2} but x cant be negative, so x = 2 and you need to apply the > sign to this, so again- x > 2
Final answer-
x > 2
or
(2, ∞) |
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iValianT
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| Joined: 21 Aug 2010 |
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| 13 Sep 2013 05:57 PM |
cowboy
i know that the right answer but it says its wrong... |
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L2000
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| Joined: 03 Apr 2008 |
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| 13 Sep 2013 05:58 PM |
{giverosstheinf, macs}
[LMaD. LSMaSH!] |
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| 13 Sep 2013 05:59 PM |
Well then your teacher is wrong ;)
Plug in any value that's 2 or lower and it wont work. Anything higher than 2 will work.
I'm a calculus student so this is easy for me |
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iValianT
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| Joined: 21 Aug 2010 |
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| 13 Sep 2013 06:01 PM |
so am i
and i already tried that answer.... its an online program so i dont think the program is wrong |
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| 13 Sep 2013 06:02 PM |
wth r u talking about this is not math there are letters in it.. |
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| 13 Sep 2013 06:02 PM |
| Does it tell you the correct answer? |
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