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I should have had [chat] prepared!

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Posts

  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    ronya wrote: »
    ronya wrote: »
    Urgh.

    So if I have this:
    EY3Zdmg.png

    and am given that it is Real, and c is real, and c is not 0 ... how do I figure that out algebraically? I know you can convert to polar form and use de Moivre's theorem to show c is tan of something, but that's the second part of the equation. I'm stuck on whatever the other method is and naturally there are no supplied worked examples for this.

    what's that in the corner, it's too small

    Sorry here's a bigger one:
    eR72wwK.png

    I know it's something to do with turning it into a quadratic somehow. But doing that I just get c = 0, which it can't be.

    do you want a hint, or an answer

    However many hours later, an answer.

    tan(2pi/5)

    you can use de moivre's, true, but it would be easier to reason geometrically. Multiplication by a complex number is a partial zoom and a partial rotation. To get back to a real number in 5 times, it can only be doing 2pi/5 per multiplication. The adjacent side is one unit long, so the opposite side must be 1*tan(2pi/5) long.

    aRkpc.gif
  • Dark Raven XDark Raven X Laugh hard, run fast, be kindRegistered User regular
    Addendum to my baw about the iPhone update last night; now the keyboard has changed the shift key being highlighted to White instead of Dark Grey, making it look like the alphabet buttons and being super confusing to look at after a forever of having this device look a certain way.

    Oh brilliant
  • STATE OF THE ART ROBOTSTATE OF THE ART ROBOT Registered User regular
    tyrannus wrote: »
    Mojo_Jojo wrote: »
    Dammit. Today is audit day and I have lab work to do

    audit day? hmmmmmmm?

    hEupQQJ.jpg?1

  • JacobkoshJacobkosh Gamble a stamp. I can show you how to be a real man!Moderator mod
    Jacobkosh wrote: »
    I am talking to a girl I know who is currently narrating to me, via hastily-typed IMs, a lesbian groping with her roommate.

    This wasn't how I'd planned to spend my 5am, but I mean, I will take it.

    is she the gropee

    or the groper

    gropee

    it was entertaining reading while it lasted

    rRwz9.gif
    surrealitycheck
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    here is the polar form method anyway

    1 = r cos x
    c = r sin x

    0 = r sin 5x by de moivre

    solve (3): 5x = 0 (discarded by assumption x != 0), 2pi, 4pi, 6pi, etc.

    x = 2pi/5, 4pi/5, 6pi/5, etc. QED

    You can now solve for r, but it's not necessary in this question.

    aRkpc.gif
  • TavTav Registered User regular
    oh god oh god i super do not wanna be in work anymore

  • electricitylikesmeelectricitylikesme Registered User regular
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    Urgh.

    So if I have this:
    EY3Zdmg.png

    and am given that it is Real, and c is real, and c is not 0 ... how do I figure that out algebraically? I know you can convert to polar form and use de Moivre's theorem to show c is tan of something, but that's the second part of the equation. I'm stuck on whatever the other method is and naturally there are no supplied worked examples for this.

    what's that in the corner, it's too small

    Sorry here's a bigger one:
    eR72wwK.png

    I know it's something to do with turning it into a quadratic somehow. But doing that I just get c = 0, which it can't be.

    do you want a hint, or an answer

    However many hours later, an answer.

    tan(2pi/5)

    you can use de moivre's, true, but it would be easier to reason geometrically. Multiplication by a complex number is a partial zoom and a partial rotation. To get back to a real number in 5 times, it can only be doing 2pi/5 per multiplication. The adjacent side is one unit long, so the opposite side must be 1*tan(2pi/5) long.

    No that one I got. Apparently I'm somehow supposed to somehow show that its
    GiKVXUI.png

  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    Jacobkosh wrote: »
    I am talking to a girl I know who is currently narrating to me, via hastily-typed IMs, a lesbian groping with her roommate.

    This wasn't how I'd planned to spend my 5am, but I mean, I will take it.

    is she the gropee

    or the groper

    Morning [chat]...*blinks, rubs eyes*

    Good to see you Jacob and that you're staying preoccupied.

    And now I realize there is no thumbs up icon? Noooooo! Regardless, hi5 for lesbian story there sir.

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
  • WinkyWinky rRegistered User regular
    This tree isn't putting up with your shit
    EY69YtI.jpg

    JacobkoshTavGonmunYoshisummonsRMS Oceanic21stCenturyjakobaggerRear Admiral ChocoAtomikaSTATE OF THE ART ROBOTBogartAresProphetspec2
  • TavTav Registered User regular
    Winky wrote: »
    This tree isn't putting up with your shit
    First world anarchy.

    21stCenturyjakobagger
  • HaphazardHaphazard Registered User regular
    The worlds slowest rebel.

  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    Jacobkosh wrote: »
    Jacobkosh wrote: »
    I am talking to a girl I know who is currently narrating to me, via hastily-typed IMs, a lesbian groping with her roommate.

    This wasn't how I'd planned to spend my 5am, but I mean, I will take it.

    is she the gropee

    or the groper

    gropee

    it was entertaining reading while it lasted

    Technically couldn't they have both been gropers?

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
  • TavTav Registered User regular
    haha my friend got tagged in a pic of him in a bar looking apathetic while wearing a swans shirt

    it is the best

  • TavTav Registered User regular
    kskt7Xg.jpg

  • bloodyroarxxbloodyroarxx Casa GrandeRegistered User regular
    tyrannus wrote: »
    Mojo_Jojo wrote: »
    Dammit. Today is audit day and I have lab work to do

    audit day? hmmmmmmm?

    hEupQQJ.jpg?1

    hells yeah IRS

    his son is da best in the WWE right now

    Bray_Wyatt_06142012ej_0024_wk.jpg

    GonmunSTATE OF THE ART ROBOT
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    edited March 2014
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    Urgh.

    So if I have this:
    EY3Zdmg.png

    and am given that it is Real, and c is real, and c is not 0 ... how do I figure that out algebraically? I know you can convert to polar form and use de Moivre's theorem to show c is tan of something, but that's the second part of the equation. I'm stuck on whatever the other method is and naturally there are no supplied worked examples for this.

    what's that in the corner, it's too small

    Sorry here's a bigger one:
    eR72wwK.png

    I know it's something to do with turning it into a quadratic somehow. But doing that I just get c = 0, which it can't be.

    do you want a hint, or an answer

    However many hours later, an answer.

    tan(2pi/5)

    you can use de moivre's, true, but it would be easier to reason geometrically. Multiplication by a complex number is a partial zoom and a partial rotation. To get back to a real number in 5 times, it can only be doing 2pi/5 per multiplication. The adjacent side is one unit long, so the opposite side must be 1*tan(2pi/5) long.

    No that one I got. Apparently I'm somehow supposed to somehow show that its
    GiKVXUI.png

    lol. I missed all the real c < 0 solutions. Well.

    are you sure you were supposed to use de moivre, anyway

    multiplying out (1+ic)^5 gives c^5 i^5 + 5 c^4 i^4 + 10 c^3 i^3 + 10 c^2 i^2 + 5 c^1 i^1 + 1

    imaginary part is therefore c^5 - 10 c^3 + 5 c, which by assumption equals 0. Further, c!=0, so we divide by c to get a quadratic in c^2. Solve for c^2. Take root.

    ronya on
    aRkpc.gif
  • TavTav Registered User regular
    The Undertaker has let himself go.

  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    tyrannus wrote: »
    Mojo_Jojo wrote: »
    Dammit. Today is audit day and I have lab work to do

    audit day? hmmmmmmm?

    hEupQQJ.jpg?1

    hells yeah IRS

    his son is da best in the WWE right now

    Bray_Wyatt_06142012ej_0024_wk.jpg

    I'd link it but I can't access twitter on my work pc where the Bella's posted about one of the Bella's being mentioned in Bray's promo last night and thanking him for noticing the plastic surgery work she had done. lol

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
  • electricitylikesmeelectricitylikesme Registered User regular
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    Urgh.

    So if I have this:
    EY3Zdmg.png

    and am given that it is Real, and c is real, and c is not 0 ... how do I figure that out algebraically? I know you can convert to polar form and use de Moivre's theorem to show c is tan of something, but that's the second part of the equation. I'm stuck on whatever the other method is and naturally there are no supplied worked examples for this.

    what's that in the corner, it's too small

    Sorry here's a bigger one:
    eR72wwK.png

    I know it's something to do with turning it into a quadratic somehow. But doing that I just get c = 0, which it can't be.

    do you want a hint, or an answer

    However many hours later, an answer.

    tan(2pi/5)

    you can use de moivre's, true, but it would be easier to reason geometrically. Multiplication by a complex number is a partial zoom and a partial rotation. To get back to a real number in 5 times, it can only be doing 2pi/5 per multiplication. The adjacent side is one unit long, so the opposite side must be 1*tan(2pi/5) long.

    No that one I got. Apparently I'm somehow supposed to somehow show that its
    GiKVXUI.png

    lol. I missed all the real c < 0 solutions. Well.

    are you sure you were supposed to use de moivre, anyway

    multiplying out (1+ic)^5 gives c^5 i^5 + 5 c^4 i^4 + 10 c^3 i^3 + 10 c^2 i^2 + 5 c^1 i^1 + 1

    imaginary part is therefore c^5 - 10 c^3 + 5 c, which by assumption equals 0. Further, c!=0, so we divide by c to get a quadratic in c^2. Solve for c^2. Take root.

    *sigh* god damn it. I kept suspecting it might be that, then thinking "no doing it this way is retarded and would take forever in an exam".

    But you're right - obviously it's just the i parts which would make it work.

    This is why I like having worked solutions to things.

    ronya
  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    Tav wrote: »
    The Undertaker has let himself go.

    He has a little bit but considering he's only making a handful of appearances on tv a year I can't say I'm surprised.

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    ronya wrote: »
    Urgh.

    So if I have this:
    EY3Zdmg.png

    and am given that it is Real, and c is real, and c is not 0 ... how do I figure that out algebraically? I know you can convert to polar form and use de Moivre's theorem to show c is tan of something, but that's the second part of the equation. I'm stuck on whatever the other method is and naturally there are no supplied worked examples for this.

    what's that in the corner, it's too small

    Sorry here's a bigger one:
    eR72wwK.png

    I know it's something to do with turning it into a quadratic somehow. But doing that I just get c = 0, which it can't be.

    do you want a hint, or an answer

    However many hours later, an answer.

    tan(2pi/5)

    you can use de moivre's, true, but it would be easier to reason geometrically. Multiplication by a complex number is a partial zoom and a partial rotation. To get back to a real number in 5 times, it can only be doing 2pi/5 per multiplication. The adjacent side is one unit long, so the opposite side must be 1*tan(2pi/5) long.

    No that one I got. Apparently I'm somehow supposed to somehow show that its
    GiKVXUI.png

    lol. I missed all the real c < 0 solutions. Well.

    are you sure you were supposed to use de moivre, anyway

    multiplying out (1+ic)^5 gives c^5 i^5 + 5 c^4 i^4 + 10 c^3 i^3 + 10 c^2 i^2 + 5 c^1 i^1 + 1

    imaginary part is therefore c^5 - 10 c^3 + 5 c, which by assumption equals 0. Further, c!=0, so we divide by c to get a quadratic in c^2. Solve for c^2. Take root.

    *sigh* god damn it. I kept suspecting it might be that, then thinking "no doing it this way is retarded and would take forever in an exam".

    But you're right - obviously it's just the i parts which would make it work.

    This is why I like having worked solutions to things.

    well, over here in singapore, we refined that to a fine art a long time ago

    YiCBhb5.jpg

    yeah, answers are a must when revising high school math, I think. Yeah that means you can't force students to revise, since they'll just cheat, but it's absolutely necessary to be efficient when studying

    aRkpc.gif
  • bloodyroarxxbloodyroarxx Casa GrandeRegistered User regular
    Gonmun wrote: »
    tyrannus wrote: »
    Mojo_Jojo wrote: »
    Dammit. Today is audit day and I have lab work to do

    audit day? hmmmmmmm?

    hEupQQJ.jpg?1

    hells yeah IRS

    his son is da best in the WWE right now

    Bray_Wyatt_06142012ej_0024_wk.jpg

    I'd link it but I can't access twitter on my work pc where the Bella's posted about one of the Bella's being mentioned in Bray's promo last night and thanking him for noticing the plastic surgery work she had done. lol

    Yeah I seen it, was reading people who dont understand the difference between him doing that and Cena keep making references to his past characters.

    I didnt have the energy to explain how those are worlds apart and that the plastic comment actually work ins into his whole "you're a false idol promos" and isn't a hey you're this goofy guy I hit with a char from behind a door from a shitty stable a couple years back.

    Gonmun
  • Rhesus PositiveRhesus Positive GNU Terry Pratchett Registered User regular
    Haphazard wrote: »
    So, after I finshed a particularly Swedish novel, I'm listening to The Long War. I quite enjoy the world they've built.

    I read the short story Pratchett wrote which eventually became The Long Earth. It was interesting to see what he decided worked and what didn't, and how the collaboration process changed the focus of the story.

    [Muffled sounds of gorilla violence]
    Haphazard
  • TavTav Registered User regular
    Gonmun wrote: »
    Tav wrote: »
    The Undertaker has let himself go.

    He has a little bit but considering he's only making a handful of appearances on tv a year I can't say I'm surprised.

    Wait, is that pic actually The Undertaker? Jesus, I was joking.

  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    the sad thing about studying math this way, it grinds to an abrupt halt once math becomes less about technique and more about your ability to define and prove theorems - where your grasp of technique is taken for granted

    so that bit can come as a nasty shock

    aRkpc.gif
  • bloodyroarxxbloodyroarxx Casa GrandeRegistered User regular
    Tav wrote: »
    Gonmun wrote: »
    Tav wrote: »
    The Undertaker has let himself go.

    He has a little bit but considering he's only making a handful of appearances on tv a year I can't say I'm surprised.

    Wait, is that pic actually The Undertaker? Jesus, I was joking.

    Lol no but the way you said it is actually very much true about Undertaker tho is pushing 50 and in such bad physical shape everything he does has to be incredily over rehearsed.

    CindersGonmun
  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    Tav wrote: »
    Gonmun wrote: »
    Tav wrote: »
    The Undertaker has let himself go.

    He has a little bit but considering he's only making a handful of appearances on tv a year I can't say I'm surprised.

    Wait, is that pic actually The Undertaker? Jesus, I was joking.

    lol No, but he has actually put on a little weight.

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    more whinging: the reticence of colleges to provide worked answers in applied math problems was absolutely infuriating

    yeah okay you can't tossed pointless assessed busywork at us

    but i gotta study okay

    aRkpc.gif
    YoshisummonsTL DR
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    also that question is nasty if the binomial formula wasn't in your precalc syllabus

    aRkpc.gif
  • electricitylikesmeelectricitylikesme Registered User regular
    ronya wrote: »
    also that question is nasty if the binomial formula wasn't in your precalc syllabus

    It's just been years since I've done second year maths, but the lack of worked solutions makes this whole thing laughably inefficent. "Wait a week and hope to god you follow a tutor explaining it" is a ridiculous model.

    When I just downloaded the solution manual for my elec. course, suddenly I noticed I was actually getting better at things since I could work around being stuck on one problem.

    ronya
  • ronyaronya Arrrrrf. the ivory tower's basementRegistered User regular
    yeesh

    yeah that is ridic

    aRkpc.gif
  • bloodyroarxxbloodyroarxx Casa GrandeRegistered User regular
    Going to post this again because I can :P
    Kiddoroar wanted a fort to sleep in tonight so ladyroar obliged him, here we are reading a book before bed.

    1256491_10201882564449640_805827572_n.jpg

    GonmunRMS OceanicAtomikaSTATE OF THE ART ROBOTTL DRjakobaggerDark Raven X
  • AtomikaAtomika Flames. On the side of my face.Registered User regular
    Top of the morning to all of you lot, to be sure!


    God my head hurts. :frowning:

  • WinkyWinky rRegistered User regular
    This episode of Space Dandy is awesome. The entire thing is just presenting this completely surreal alien society formed by intelligent plants, but does so with little subtext or explanation, and so what you see is a series of trippy and incomprehensible scenes in which events occur but you have no basis with which to relate them to our own world because the world depicted is so alien. I love it.

  • electricitylikesmeelectricitylikesme Registered User regular
    ronya wrote: »
    yeesh

    yeah that is ridic

    The funny thing is I was complaining about this to Bulgarian girl, who is tutoring chem students at the moment, and she had one of them complaining about the exact same thing to her. Of course I have numerous problems with the way the chem department does it's marking. It is...unrigorous.

  • STATE OF THE ART ROBOTSTATE OF THE ART ROBOT Registered User regular
    Best dad.

    Atomika
  • SanderJKSanderJK Crocodylus Pontifex Sinterklasicus Madrid, 3000 ADRegistered User regular
    One of the saddest things was that when the Undertaker hobbled to the ring to challenge Lesnar, he ducked in under the top rope instead of stepping over it.

    Wrestling wrecks bodies like nothing else. I've been listening to Steve Austins podcast and it's just one big string of medical wrecks.

    Also IRS other son is NXTs best heel, who essentially is playing a character who is delusional about how much the fans love him.

    Steam: SanderJK Origin: SanderJK
    STATE OF THE ART ROBOT
  • STATE OF THE ART ROBOTSTATE OF THE ART ROBOT Registered User regular
    SanderJK wrote: »
    One of the saddest things was that when the Undertaker hobbled to the ring to challenge Lesnar, he ducked in under the top rope instead of stepping over it.

    Wrestling wrecks bodies like nothing else. I've been listening to Steve Austins podcast and it's just one big string of medical wrecks.

    Also IRS other son is NXTs best heel, who essentially is playing a character who is delusional about how much the fans love him.

    Yeah I just listened to the "Rowdy" Roddy Piper interview and man, he gets personal on there with his stories.

  • GonmunGonmun He keeps kickin' me in the dickRegistered User regular
    SanderJK wrote: »
    One of the saddest things was that when the Undertaker hobbled to the ring to challenge Lesnar, he ducked in under the top rope instead of stepping over it.

    Wrestling wrecks bodies like nothing else. I've been listening to Steve Austins podcast and it's just one big string of medical wrecks.

    Also IRS other son is NXTs best heel, who essentially is playing a character who is delusional about how much the fans love him.

    Taker also underwent a hip replacement last year as well so he hasn't had that going for him from a flexibility stand point. Though at least he's got something to fall back on with his real estate company once he decides to hang up the boots.

    Funnily enough, Kane just opened an insurance company with his wife. I wonder how their fire insurance coverage is?

    desc wrote: »
    ~ * swole patrol flying roundhouse kick top performer recognition: April 2014 * ~
    If you have a sec, check out my podcast: War and Beast Twitter Facebook
    STATE OF THE ART ROBOT
  • STATE OF THE ART ROBOTSTATE OF THE ART ROBOT Registered User regular
    Plus both Taker and Kane seem to have been smart with their money.

    Gonmunsyndalis
This discussion has been closed.