Slushba132
BustyLoli-Chan
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RE: i hate math.
(23/05/2010 01:01 PM)deathmock5 Wrote: hell, i have a test tomorrow in math, half of the questions i know the answers to, but.. these i don't...
also, don't ask how i have the questions before the test, thank you.
1. find inverse of: y=6x^2
2. solve: x^2-2x^2+x=0
3. type of polynomial, classify it and what degree is it: f(x)=11x^2+8x-3
4. divide: (x^2+3x-4) / (x-1)
5. an exponential function with a base of 4 and goes through the point (-1,1)
6. solve log_2 128
i think the answer is 7?
7. solve log_(3) 27 - log_(3) 9
i think the answer to this one is 1
8. explain how the change of base works with logarithms
9. solve (x^2 + 7x +12) / (x^2 - 9)
1. y=6x^2
(x)=6(y)^2
√ x=6y
y= (±√ x)/6
2. x^2-2x^2+x=0
(2 ± √ 2^2-4*1*1)/(2(1))
x = 0,1
3. lolwut
4. (x^2+3x-4) / (x-1)
X+4
5. Can't be assed
6. 7
7. 3 - Log3(9)
8. Can't be assed
9. (x+4)/(x-3)
easy mode
also in the future this was a really helpful tool in algebra 2
http://www.mathway.com
I still think it is important to know how to do them by hand first :/
tools are helpful but I'm generally sick of idiots become handicapped by them
(This post was last modified: 23/05/2010 04:52 PM by Slushba132.)
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23/05/2010 04:51 PM |
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deathmock5
Where is your god now?
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RE: i hate math.
(23/05/2010 02:28 PM)bloodangel619 Wrote: how old are you! these are totally easy! I remember solving stuff like this 7 year's ago but any way since i am totally bored and i have nothing to do i solved some of them for you although since I'm Persian i don't understand some of them and i hope you can read my hand righting, didn't have any thing near me to write with rather than an old rusty pencil I thought the best way to give them to you was to upload the scan of the paper i wrote them on here you are i hope they are right!
*hugs*
thank you ^^' i need to pass this test in order to graduate
i can understand you writing, kinda..
it seems to be maching up with my awnsers.
here i threw together a ms word so that there easyer to read for the both of us ^^'
also, +rep
fx.rar (Size: 9.05 KB / Downloads: 175)
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23/05/2010 05:07 PM |
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LumpiaWarrior
chef d(^.^)b
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RE: i hate math.
(23/05/2010 04:41 PM)Incadude Wrote: Algebra is cake.
Geometry kicked my butt though.
mine is the other way around, i still don't know how to FOIL correctly
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23/05/2010 06:09 PM |
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ZiNgA BuRgA
Smart Alternative
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RE: i hate math.
(23/05/2010 01:01 PM)deathmock5 Wrote: 3. type of polynomial, classify it and what degree is it: f(x)=11x^2+8x-3
Degree 2 (highest exponent of x)
(23/05/2010 01:01 PM)deathmock5 Wrote: 5. an exponential function with a base of 4 and goes through the point (-1,1)
y = 4 x + c
let x=-1, y=1
1 = 4 -1 + c
c = 0.75
y = 4 x + 0.75
(23/05/2010 01:01 PM)deathmock5 Wrote: 7. solve log_(3) 27 - log_(3) 9
i think the answer to this one is 1
1, you can check with a calculator.
(23/05/2010 01:01 PM)deathmock5 Wrote: 8. explain how the change of base works with logarithms
log a(x) ÷ log a(y) = log y(x)
^ I'm guessing that?
Unless they're asking for a proof...
(This post was last modified: 23/05/2010 07:32 PM by ZiNgA BuRgA.)
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23/05/2010 07:31 PM |
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Assassinator
...
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RE: i hate math.
(23/05/2010 07:31 PM)ZiNgA BuRgA Wrote: (23/05/2010 01:01 PM)deathmock5 Wrote: 8. explain how the change of base works with logarithms
loga(x) ÷ loga(y) = logy(x)
^ I'm guessing that?
Unless they're asking for a proof...
Proof is pretty much...
y = x b
log a(y) = log a(x b)
log a(y) = b.log a(x)
log a(y) / log a(x) = b
log a(y) / log a(x) = log x(y)
(23/05/2010 06:09 PM)LumpiaWarrior Wrote: mine is the other way around, i still don't know how to FOIL correctly
FOIL?
(This post was last modified: 23/05/2010 11:55 PM by Assassinator.)
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23/05/2010 07:58 PM |
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Incadude
Peruano User
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23/05/2010 08:01 PM |
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Assassinator
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RE: i hate math.
(23/05/2010 08:01 PM)Incadude Wrote: First Outer Inner LAst
And what the hell is that?
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23/05/2010 08:14 PM |
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Incadude
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RE: i hate math.
(23/05/2010 08:14 PM)Assassinator Wrote: (23/05/2010 08:01 PM)Incadude Wrote: First Outer Inner LAst
And what the hell is that?
I don't know just something that stuck in my head and won't get out!!!
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23/05/2010 08:19 PM |
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Assassinator
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RE: i hate math.
(23/05/2010 08:19 PM)Incadude Wrote: (23/05/2010 08:14 PM)Assassinator Wrote: (23/05/2010 08:01 PM)Incadude Wrote: First Outer Inner LAst
And what the hell is that?
I don't know just something that stuck in my head and won't get out!!!
Wiki tells me it's to help people remember how to multiply 2 term polynomials polynomials.
Lol. Multiplying polynomials is not that hard (read: very easy)... do you really need some special way to make kids remember it? And it's only for a special case anyway.
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23/05/2010 08:34 PM |
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Sparker
Super Lame Productions
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RE: i hate math.
I'm fairly good at maths but I just find it boring.
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23/05/2010 10:56 PM |
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