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Old 09-09-07, 04:49 AM   #21
yung23
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Re: HELP ME

Vonne, WHY are YOU looking at ANY of this ?


did I miss something abelian or lie get released from tptb in spoilers ?

where is this math urge coming from ?
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Old 09-09-07, 04:51 AM   #22
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Re: HELP ME

Homework would be my guess, yung.
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Old 09-09-07, 04:56 AM   #23
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Re: HELP ME

It is not by choice, yung. For some insane reason, someone in the Liberal Arts field has to do two math classes. I have no idea why. I think it's some type of sick joke.
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Old 09-09-07, 05:21 AM   #24
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Re: HELP ME

I watch lost on channel 12, which is 96 less than 108. I hope this helps.
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Old 09-09-07, 05:23 AM   #25
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Re: HELP ME

Quote:
Originally Posted by vonnegut View Post
Okay...

Use the Intermediate Value Theorem to determine an interval bounded by integers one unit in length in which the polynomial function is guaranteed to have a zero.

f(x)=3(x^5)-9(x^4)+5(x^3)-4(x^2)+x-3

Okay, here's what my textbook says about the Intermediate Value Theorem:

"Let a and b be real numbers such that a < b. If f is a polynomial function such that f(a) =/= f(b), then, in the interval [a,b], f takes on every value between f(a) and f(b)."

Right. So I'm looking at the examples and it's like oh, I kind of get that. They're saying that if, in a function, you have the points (-1, -1) and (-2, 5), that means that there is a zero or x-intercept between -1 and -2. Right?

So I start finding points in the function I list above. Here are the points I get: (-2, 19), (-1,1), (0, -3) (1, -7)

So I'm figuring, oh, great! This means that there is an x-intercept between -1 and 0.

But no! I go to graph it on my little graphing calculator, and I get this insano graph. The x-intercept is between 2 and 3. Now, I was right about (1, -7). I was right about (0, -3). But where I should have the point (-1, 1), instead I have like, (-1, -30). What in the hell is going on? Can anyone explain this to me?
can you repeat that in english?

Quote:
Originally Posted by yung23 View Post
Vonne, WHY are YOU looking at ANY of this ?


did I miss something abelian or lie get released from tptb in spoilers ?

where is this math urge coming from ?
what the hell is yung doing in lostaways???
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Old 09-09-07, 05:52 AM   #26
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Re: HELP ME

Quote:
Originally Posted by vonnegut View Post
It is not by choice, yung. For some insane reason, someone in the Liberal Arts field has to do two math classes. I have no idea why. I think it's some type of sick joke.
My degree is in liberal arts and all I had to take was plain old algebra/geometry crap...math 101. I don't even know what math that is that you're trying to do. I have to say I'm impressed with the smarties around here...TBC and ILF (would he be FreckTheFirst????)
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Old 09-09-07, 06:01 AM   #27
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Re: HELP ME

Help me.
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Old 09-09-07, 06:03 AM   #28
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Re: HELP ME

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Help me.
Hey, it's Ben!

Where the hell is vonne?
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Old 09-09-07, 06:44 AM   #29
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Re: HELP ME

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Originally Posted by vonnegut View Post
Wow... thank you.


I still don't understand how I screwed this up... which is the entire problem, I think. I understand the concept being introduced-- it's just the actual math of it that is giving me problems. I'll accept now that I messed up my negatives, but I don't know how I messed them up. I mean, I'm right in thinking that if a negative is taken to an odd exponent, it stays negative, if it's taken to an even exponent, it becomes positive?

So I still don't really understand where I'm going wrong with this, but it's nice to know that someone else gets it and I'm not going completely insane.

So thanks. You rock.
Yes, a negative number would be a positive number if taken to an even exponent and a negative number if taken to an odd exponent. My bet? Something went goofy when you calculated the value for X=-1. Just a guess, but was beer involved?

If you messed up the signs on all of the terms after x^4, you'd get -3 - 9 + 5 + 4 + 1 + 3, which is equal to 1.

BTW, it always seemed like cruel and unusual punishment to make a liberal arts major do algebra.
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Old 09-09-07, 06:54 AM   #30
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Re: HELP ME

Quote:
Originally Posted by TPTP View Post
42
I love you.

Quote:
Originally Posted by Frecklestoo View Post
My degree is in liberal arts and all I had to take was plain old algebra/geometry crap...math 101. I don't even know what math that is that you're trying to do. I have to say I'm impressed with the smarties around here...TBC and ILF (would he be FreckTheFirst????)
HAHA! Good bles the Ntional Circulum! I haven't done maths for...ooh....maybe 6 years?! I LOVE being an arts student!
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