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Bioelectricclam BEC is my copilot from under the sea Since: Feb, 2010
BEC is my copilot
#551: Jun 13th 2010 at 4:43:15 PM

I don't remember them and they aren't in my calculus book sad

Fear is our ally. The gasoline will be ours. A Honey Badger does not kill you to eat you. It tears off your testicles.
Bioelectricclam BEC is my copilot from under the sea Since: Feb, 2010
BEC is my copilot
#552: Jun 13th 2010 at 4:45:24 PM

hmnmn so wait...i could rewrite that as 2*lnx...right?

Fear is our ally. The gasoline will be ours. A Honey Badger does not kill you to eat you. It tears off your testicles.
Taelor Don't Forget To Smile from The Paths of Spite Since: Jul, 2009
Don't Forget To Smile
#553: Jun 13th 2010 at 4:57:21 PM

^ Yep. Don't forget the C.

The Philosopher-King Paradox
Yuanchosaan antic disposition from Australia Since: Jan, 2010
antic disposition
#554: Jun 13th 2010 at 5:13:56 PM

^^Sure. Then do it by parts.

Ninja'd.

edited 13th Jun '10 5:14:08 PM by Yuanchosaan

"Doctor Who means never having to say you're kidding." - Bocaj
Zizoz Since: Feb, 2010
#555: Jun 13th 2010 at 5:47:36 PM

Oh, yeah. You do still have to use parts. 2 (or 1) is easy to integrate, at least. But starting with parts might actually work better. Or just as well.

Edit: Well, works okay, anyway. I was thinking that ln(x) would be easy to integrate and ln(x^2) wouldn't be integratable without changing it to 2ln(x) first.

edited 13th Jun '10 5:51:25 PM by Zizoz

Bioelectricclam BEC is my copilot from under the sea Since: Feb, 2010
BEC is my copilot
#556: Jun 13th 2010 at 5:57:16 PM

Thanks everybody. That helped!

Fear is our ally. The gasoline will be ours. A Honey Badger does not kill you to eat you. It tears off your testicles.
Mapi "keionbu ni yokusou, nyan?" from Sakurakou Keionbu Since: Aug, 2011
"keionbu ni yokusou, nyan?"
#557: Jul 26th 2010 at 5:34:25 AM

[1]

This is a problem set in probability theory and statistics. I'm desperate and soliciting for help. If anyone wants to do this for the lulz, then go ahead. I'd appreciate any help I can get, since I'm really lost here (especially with what distribution to use for discrete random variables).

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Deboss I see the Awesomeness. from Awesomeville Texas Since: Aug, 2009
I see the Awesomeness.
#558: Jul 26th 2010 at 8:04:07 AM

Which one? Number two?

Fight smart, not fair.
SRC Dead from Dead Since: Dec, 2009
Dead
#559: Jul 28th 2010 at 4:12:06 PM

I have homework about the "greek hero" and it relation with The Iliad. Any help?

Dead
CrowT.Robot Trainspotter from Ga-Metru Since: Oct, 2009
Trainspotter
#560: Jul 28th 2010 at 4:14:30 PM

I have to write an entire essay about family systems theory.

Formerly known as Crow T. Robot.
Deboss I see the Awesomeness. from Awesomeville Texas Since: Aug, 2009
I see the Awesomeness.
#561: Aug 4th 2010 at 8:52:27 AM

Can anyone provide a link for a walkthrough on making a lead lag controller?

Fight smart, not fair.
Mapi "keionbu ni yokusou, nyan?" from Sakurakou Keionbu Since: Aug, 2011
"keionbu ni yokusou, nyan?"
#562: Aug 4th 2010 at 8:54:08 AM

Does anyone know how to do a Decimal Quine-Mc Cluskey algorithm of boolean simplification for a function of five variables?

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KylerThatch literary masochist Since: Jan, 2001
literary masochist
#563: Aug 4th 2010 at 8:58:28 AM

That was EEE 8. I think I can sort of remember how to do it... if I look it up again. But yeah...

edited 4th Aug '10 8:58:43 AM by KylerThatch

This "faculty lot" you speak of sounds like a place of great power...
Mapi "keionbu ni yokusou, nyan?" from Sakurakou Keionbu Since: Aug, 2011
"keionbu ni yokusou, nyan?"
#564: Aug 4th 2010 at 9:00:22 AM

I thought EEE 8 was circuit analysis for CS students? Also, I'm going to bed now, so nevermind. :p

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KylerThatch literary masochist Since: Jan, 2001
literary masochist
#565: Aug 4th 2010 at 9:02:48 AM

Well, we did cover logic circuits. Hence, the Quine-McCluskey algorithm.

Yes, now I definitely remember this.

This "faculty lot" you speak of sounds like a place of great power...
Mapi "keionbu ni yokusou, nyan?" from Sakurakou Keionbu Since: Aug, 2011
"keionbu ni yokusou, nyan?"
#566: Aug 4th 2010 at 9:04:41 AM

Oh you smart smart guy. I checked back and got the prime implicants down, so I'm pretty close to solving this.

Thanks though. :p

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Barcode711 Clutch pedal = sidestep from Uddiyana Since: Apr, 2009
Clutch pedal = sidestep
#567: Aug 4th 2010 at 3:27:17 PM

Ah, christ. Can someone explain to me why yp here isn't just "2e^x", but some abomination borne out of being divided by a made-up variable D?

[1]

Worshipper of Ahura Mazda, as proclaimed by Zoroadster http://twitter.com/bpglobalpr
Deboss I see the Awesomeness. from Awesomeville Texas Since: Aug, 2009
I see the Awesomeness.
#568: Aug 4th 2010 at 4:20:17 PM

You didn't laplace 2*exp(x) I believe.

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Barcode711 Clutch pedal = sidestep from Uddiyana Since: Apr, 2009
Clutch pedal = sidestep
#569: Aug 4th 2010 at 4:41:58 PM

Laplace?

See, this isn't my writing, this is the tutor's. THIS is what I did. As you can see, I have no idea what his notation is referring to.

  • 1. For yc, yc^0 being the auxiliary formula and ycc being the r formula, r1 != r2, therefore yc = (C1)e^[(r1)x] (consulting my auxiliary roots result chart).
  • 2. For yp, G(x) = Ae^(kx) (where k and A are constants), therefore yp = Ae^(kx). (consulting my g(x) chart.)
  • y = yp + yc.

But evidently my yp is wrong. The tutor's work suggests that:

  • yp is actually what I gave divided by the ycc, except with (d/dx) replacing the rs (and dx/d being an integral).
  • For some reason, since if you consider G(x) to be e^ax in this case, a = D = 1, which can't be because then it's 1/0.

What am I missing here?

edited 4th Aug '10 4:46:55 PM by Barcode711

Worshipper of Ahura Mazda, as proclaimed by Zoroadster http://twitter.com/bpglobalpr
Deboss I see the Awesomeness. from Awesomeville Texas Since: Aug, 2009
I see the Awesomeness.
#570: Aug 4th 2010 at 5:03:10 PM

When he substituted in 1 for D it exploded because there was a zero on the bottom so he took the derivative of the top and bottom. So he wound up with 2x*exp(x) on top and the other stuff on the bottom. I'm not sure why he substituted 1 for D though. It's been too long since I've took calc. If they taught a better method afterward, I probably just remember that.

Fight smart, not fair.
Barcode711 Clutch pedal = sidestep from Uddiyana Since: Apr, 2009
Clutch pedal = sidestep
#571: Aug 4th 2010 at 5:12:03 PM

I made an accidental correction. It soud be if G(x) = Ce^kx, where C and k are constants, then yp = Ae^kx. I found the same tutor and we'll see if he can teach me how to solve for A...

Worshipper of Ahura Mazda, as proclaimed by Zoroadster http://twitter.com/bpglobalpr
Barcode711 Clutch pedal = sidestep from Uddiyana Since: Apr, 2009
Clutch pedal = sidestep
#572: Aug 4th 2010 at 5:26:16 PM

Yep, figured it out. It's a specific solving-for-the-constant method for these e^kx G(x) equations, which for some reason I don't have notes on. The others should be easy, as I have notes on them.

Thanks anyway.

Worshipper of Ahura Mazda, as proclaimed by Zoroadster http://twitter.com/bpglobalpr
Mapi "keionbu ni yokusou, nyan?" from Sakurakou Keionbu Since: Aug, 2011
"keionbu ni yokusou, nyan?"
#573: Aug 6th 2010 at 6:28:04 AM

I am disturbed by the fact that it took me about 5 minutes to understand either solution. D:

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vandro Shop Owner from The little shop that wasn't Since: Jul, 2009
Shop Owner
#574: Aug 22nd 2010 at 9:56:16 AM

Could someone help me with hyperbolic function integration? I'm stuck at one problem.

Deboss I see the Awesomeness. from Awesomeville Texas Since: Aug, 2009

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