Just a late night rant...

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    Just a late night rant...


    Is anybody else up at 1:30am doing homework? God, it sucks, doesn't it?

    I'm not doing 'hard' work, but, graphing logarithmic functions by hand, and finding 'assymtotes, inflection points, extremums, etc' can get very drawn out, tedious, and boring. Right around now, its taking me 3x longer to do this work than it should be b/c I keep making stupid mistakes with eyes half-open. So yeah....goin' to bed now. I've got to be up in a few hours to take a CPR certification... *sigh*


    K, bed time. C ya.

    <-- eat first

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    Quote Originally Posted by kwyckemynd00
    Is anybody else up at 1:30am doing homework? God, it sucks, doesn't it?

    I'm not doing 'hard' work, but, graphing logarithmic functions by hand, and finding 'assymtotes, inflection points, extremums, etc' can get very drawn out, tedious, and boring. Right around now, its taking me 3x longer to do this work than it should be b/c I keep making stupid mistakes with eyes half-open. So yeah....goin' to bed now. I've got to be up in a few hours to take a CPR certification... *sigh*


    K, bed time. C ya.

    <-- eat first
    graphing logs, ass infections, pointing extremities?? sounds wierd..
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    And who said Marines weren't smart.
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    Quote Originally Posted by kwyckemynd00
    I've got to be up in a few hours to take a CPR certification... *sigh*
    Just blow in the hole and beat on the chest. Now you're Certified!
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    Quote Originally Posted by jarhead
    graphing logs, ass infections, pointing extremities?? sounds wierd..
    Those ass infections can be really anoying....
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    Quote Originally Posted by natedogg
    And who said Marines weren't smart.
    he's no devil. he just lives in devil town. kwyck is too smart for the corps. what's your major again brutha?
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    Quote Originally Posted by Beelzebub
    he's no devil. he just lives in devil town. kwyck is too smart for the corps. what's your major again brutha?
    I was talkin bout jarhead biatch.
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    fair enough.

    i'll make it up tonight
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    Quote Originally Posted by Beelzebub
    fair enough.

    i'll make it up tonight
    Awesome!

    Besides, Kwycke is too much of a wuss to withstand the Corps.
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    Quote Originally Posted by Beelzebub
    he's no devil. he just lives in devil town. kwyck is too smart for the corps. what's your major again brutha?
    he wants to be a doctor...(yippe for me!!!! lol).....

    im sorry you had a bad night hun
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    Quote Originally Posted by Mrs. Gimpy!
    he wants to be a doctor...(yippe for me!!!! lol).....

    im sorry you had a bad night hun
    so his major is "Doctor"?

    New one...
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    Quote Originally Posted by houseman
    so his major is "Doctor"?

    New one...
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    Quote Originally Posted by houseman
    so his major is "Doctor"?

    New one...
    Minoring in Cashieronimics..


    BTW nice avatar nate. Who gets to ride up front?
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    Are you taking College Algebra?
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    Quote Originally Posted by houseman
    so his major is "Doctor"?

    New one...
    ơơops..... i think the maryland air is frezing my california brain....lol.... oh boy...lol
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    Quote Originally Posted by meowmeow
    Just blow in the hole and beat on the chest. Now you're Certified!
    That's what I do when gimpy's not up for a romp...
  17. Registered User
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    Quote Originally Posted by PVSkyHigh
    Are you taking College Algebra?
    Calc II...I should have done this loooong ago, but I kept opting out of math for quite a few semesters....bad move. Now I've got to finish all my math and my workload is much higher now. Oh well, I did it to myself.
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    Quote Originally Posted by natedogg
    Awesome!

    Besides, Kwycke is too much of a wuss to withstand the Corps.
    True...the only time you'll see me associated with the word 'corps[e]' will be in a newspaper article about a serial necropheliac... Did I just say that out loud? Damn...did it again!
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    rhunt000's Avatar
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    Check out Mathematica. It's a little expensive, but it's worth it if you have much more math to take. I'm working on my MS in Math and it has been worth every penny.
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    Quote Originally Posted by kwyckemynd00
    Calc II...I should have done this loooong ago, but I kept opting out of math for quite a few semesters....bad move. Now I've got to finish all my math and my workload is much higher now. Oh well, I did it to myself.
    Cal II was a bitch even if it taken by itself...
    And Mathmatica is some good software
  21. Registered User
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    hmm...I'll take a look at that....thx for the info!

    Hasn't been too bad so far, but, its just all the trig that sucks. when you've not really used it in over a year, it creates problems
  22. Registered User
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    Getting my hands on a 'trial version' as we speak
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    Here's a good link to help with basic plotting:

    http://documents.wolfram.com/mathema.../section-1.9.1

    Let me know if I can be of any help.
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    Thx bro, i appreciate it.

    i didin't know they actually offered a 'trial version' on their website, but i just saw that in the link you gave me...i guess, it would be more correct to say i've got a 'backup copy' on the way, b/c its not actually a 'trial version'
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    Mathematica is some freakin' awesome software. I've got a notebook I can shoot you where I was working on Cubic Roots. Some ideas on finding the extrema and inflection points along with some good visuals when plotting. Here is a pic of one of the graphs.
    Attached Images Attached Images
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    Nice, bro...My download just finished...is it easy enough to learn to be useful for helping me in my test in a couple days? I don't have a calc book, and the xerox @ the library broke, so I got put behind 5 sections! haha.

    I really know 'nothing' about mathematica right now, other than you guys recommended I look into it...so, anything and everything you've got for me is much appreciated

    thx again!
  27. Registered User
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    Hey, how did you tell the program to define those points? I'm playing around with it, and haven't quite figured that out yet Thx!
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    Shoot me a problem and what solutions you need. I can work an example and send you the notebook.
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    Oh, no need to go out of your way bud. I did a little bit of research, and, its not 'that' necessary for me at the moment to have those cool little extra features, ya know? It seemed like it would be convenient, but after reviewing how much code goes into it, its not worth it right now since it was 'just for fun' so to speak.

    I do have one question though...when I solve for x in an equation (looking for critical points) I often get multiple points, of course. Now, how do I assign those pionts to different variables so I can later plug them in to solve for their corresponding y value?

    thx!
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    I've attached a zipped notebook. All you have to do is plug in the original equation and then evaluate the rest of the cells. plot1 has a range of -5,5 so you may have to change that depending on what you are working with. Hope this helps.
    Attached Files Attached Files
  31. Registered User
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    Thx bro, I appreciate it....I'll keep foolin' with it, this thing is pretty cool
  32. Registered User
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    Oh, so lame. I didn't sleep well the night before my first test (got to bed around 5:00am) and I totally 'blanked' out.

    I got stuck, twice, on simple substitutions during integration by parts questions, e.g.

    I=Integral[ x / Sqrt[1-x^2]]dx
    Let U=1-x^2, dU=-2xdx
    I=1/2[-2Sqrt[1-x^2]dx

    = -Sqrt[1-x^2]

    Yeah, simple substitution right? Yeah, I know...lol. I also decided I need to invest in a graphing calculator. I see all of these kids who have all of the formulas either programed into or saved into their graphing calcs, and they can check their derivatives, integrals, graphs, etc while I have to guess. Best case 'possible' I'd get a 90%, but I think that'd be pushing it. I'm probably on B/C range on this test, all because I got caught up with a simple substitution problem--something I could easily answer / should have easily answered. The bummer is, the partial credit will be next to nothing because it was in an integration by parts question. So, I was basically on step 2/5 or so. lol.

    Then, I went to a public speaking class afterward, and I couldn't even speak. I'm not shy either, and I've got experience in public speaking (small groups). Its amazing what a lack of sleep will do to you. wow...
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    rhunt000's Avatar
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    I know what you mean about the lack of sleep. I'm the type that I'd rather get in bed around 9:00pm and get up super early to study rather than stay up late. I don't function well at all when I stay up late (no pun intended).

    Check out the TI-89. I love it.
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    Let me know if you need any help with Calculus 2.

    I will tell you though that Calculus 2 gets easier as the time goes by.

    The TI-89 Titanium is a must own if you ask me.
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    Yeah, so far, I don't think there is much I couldn't answer with the material we've covered, but the lack of sleep made things pretty horrendous for me. I didn't even feel like me...

    TI-89, eh? I've heard its a good one. I may have to buy it some time here.

    Thx for the help/input guys.

    I've actually been using mathematica to do homework in My hand writing is very sloppy, and therefore I sometimes lose my place (maybe sometimes is an understatement), so using it makes things very nice! Only, I've found myself using Log[x] in place of Ln[x] outside of mathematica...that wouldnt' go over well on a test
  36. Registered User
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    Okay, I've got one...I keep getting the wrong answer on this.

    Note: Log[A] = ln(a); I wrote it inside mathematica and it reads Log[A] as ln[a].

    The correct answer should be
    Log[e^x + Sqrt(4+e^2x)]+C, so I'm either adding a factor of 1/2 or missing a factor of 2 before I get it into log form (or maybe in the back substitution)...

    any help is appreciated.thx, km00
    Last edited by kwyckemynd00; 06-03-2006 at 08:02 PM.
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    I'll have to print this out and have a closer look.
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    Thx bud...I'm just STUCK.

    O/T: I've taken time off from my math courses prior to this class, and previously never paid much attention to trigonometry during my classes, and I cannot believe how much trig there is and how many identities i need to recognize so far in calc ii. So, I've had to spend a lot of time familiarizing myself with them....*snore*
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    I "think" I figured it out. I"ll try it later and check myself. But, I 'believe' I messed up when i substitued x/a = tan[v], if I substitute x=a tan[v] (yes, I know its the same) I shouldn't mess up my back-substitution. i can't figure out where i messed up, so I figure I'll go around

    I'll try it after i eat.
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    Okay! That didn't do it for me iether! same exact result! GRRRRR!
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