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Posts

  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    log(100) = 2

    unintentional on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    always a happy day when I get a term with LN(1)

    Squall on
  • the cheatthe cheat Registered User, ClubPA regular
    edited November 2009
    i probably couldn't do long division anymore if i had to.

    the cheat on
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  • SquallSquall hap cloud Registered User regular
    edited November 2009
    I kind of forgot long division for a while

    and then suddenly I had to factor polynomials again

    Squall on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    I'm switching majors from a major where I'd need to go up to Diff. Eq. to a major where I'm already higher up than I need to go.

    ...Gonna take some math electives.

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    I always forget that factoring is actually useful outside of quadratic equations
    and that I need to do it when isolating a variable

    unintentional on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    but dif eq is butts easy

    Squall on
  • SirToastySirToasty Registered User regular
    edited November 2009
    Long division is so easy. I don't know how people forget how to do it.

    SirToasty on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    Factoring polynomials and completing the square have become fun for me.

    Baroque And Roll on
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  • L|amaL|ama Registered User regular
    edited November 2009
    Nope. They ask us to calculate logs, natural logs, e^(bullshit), arcsin/cos/tan, and a bunch of other stuff high school made me rely on the calculator for.

    I can do the actual calculus. Differentiation, integration, etc. etc. Where I fuck up is algebra bullshit like that.

    huh fuck that, we only get sines and cosines of common angles (pi/2, pi/3, pi/4, pi/6) and e^complex number stuff. Knowing that 1/e ~=37% is expected to be known but not necessary, that sounds pretty awful.

    L|ama on
  • SirToastySirToasty Registered User regular
    edited November 2009
    Factoring polynomials and completing the square have become fun for me.
    The stuff that made me want to die.

    I got good at factoring though but I could never figure out completing the square. Also calculus was the only math I ever kind of enjoyed. I've always been good at math but I still don't care for it (except some calculus if I could remember it).

    SirToasty on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    dif eq was an interesting class

    the prof was a total prick, a grouch about everything

    and he'd spend half the class talking about something nonsensical and jumping topics

    I think one day in class he went from

    his wife's car > repairing a flat tire > the economy > libertarians > jurassic fight club

    Squall on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    L|ama wrote: »
    Nope. They ask us to calculate logs, natural logs, e^(bullshit), arcsin/cos/tan, and a bunch of other stuff high school made me rely on the calculator for.

    I can do the actual calculus. Differentiation, integration, etc. etc. Where I fuck up is algebra bullshit like that.

    huh fuck that, we only get sines and cosines of common angles (pi/2, pi/3, pi/4, pi/6) and e^complex number stuff. Knowing that 1/e ~=37% is expected to be known but not necessary, that sounds pretty awful.

    Makes me hate life during exams.

    How the fuck am I supposed to know arctan(57)? How?

    You want me to simplify e^(11/23)?

    Fucking arbitrary numbers.

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    so I had a calc test the other day
    today my teacher told us that 75% of the class got the first question wrong:

    Question 1: find f'(2) when f(x) = ln(x)^2

    unintentional on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    Really?

    Really?

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    really.
    if it makes you feel any better I'm in high school?

    unintentional on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    when in doubt guess 0 or 1

    Squall on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    really.
    if it makes you feel any better I'm in high school?

    Not really. Considering I could do that in my head when I took the differentiation test in high school.

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    unintentional on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    Nope.

    Chain rule, dawg.

    f(g(x))

    derive

    f'(g(x))*g'(x)

    f(x) = ln(x)^2

    f'(x) = 2ln(x)*(1/x)

    f'(x) = 2ln(x)/x

    Baroque And Roll on
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  • L|amaL|ama Registered User regular
    edited November 2009
    I can complete the square for everything except when x^2 has a constant term in front of it, I just use the quadratic equation then :<

    we don't have any specific classes on differential equations, but I'm doing physics so I'm going to have to deal with more differential equations than I could ever want
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    Nope.

    Chain rule, dawg.

    f(g(x))

    derive

    f'(g(x))*g'(x)

    f(x) = ln(x)^2

    f'(x) = 2ln(x)*(1/x)

    f'(x) = 2ln(x)/x

    uh that gives Ln(2) when you substitute in x=2

    L|ama on
  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    Nope.

    Chain rule, dawg.

    f(g(x))

    derive

    f'(g(x))*g'(x)

    f(x) = ln(x)^2

    f'(x) = 2ln(x)*(1/x)

    f'(x) = 2ln(x)/x

    yes. but the question wanted f'(2).
    so

    2ln(2)/2
    =
    ln2

    unintentional on
  • FirmSkaterFirmSkater Registered User regular
    edited November 2009
    Really comfortable in Ohio. 50F/55F is perfect for me. I love it. Also i can finally smell the leaves and that makes me happy.

    FirmSkater on
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  • SquallSquall hap cloud Registered User regular
    edited November 2009
    edit: late can't do maths apparently

    Squall on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    Nope.

    Chain rule, dawg.

    f(g(x))

    derive

    f'(g(x))*g'(x)

    f(x) = ln(x)^2

    f'(x) = 2ln(x)*(1/x)

    f'(x) = 2ln(x)/x

    yes. but the question wanted f'(2).
    so

    2ln(2)/2
    =
    ln2

    Oh.

    Forgot about that part.

    Then yeah, you're good.

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    woo

    unintentional on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    L|ama wrote: »
    I can complete the square for everything except when x^2 has a constant term in front of it, I just use the quadratic equation then :<

    we don't have any specific classes on differential equations, but I'm doing physics so I'm going to have to deal with more differential equations than I could ever want
    I only wrote it down because we had to show our work.
    the answer is ln2 right?
    because I got ln2

    Nope.

    Chain rule, dawg.

    f(g(x))

    derive

    f'(g(x))*g'(x)

    f(x) = ln(x)^2

    f'(x) = 2ln(x)*(1/x)

    f'(x) = 2ln(x)/x

    uh that gives Ln(2) when you substitute in x=2

    I forgot about the x=2 part.

    Baroque And Roll on
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    SteamID: Baroque And Roll
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    hey math guys.

    Have fun with this.

    http://www.wolframalpha.com/

    Baroque And Roll on
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    SteamID: Baroque And Roll
  • L|amaL|ama Registered User regular
    edited November 2009
    well I thought it was Ln(x^2) when I first glanced at it, so welp.

    L|ama on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    Nah, notation is weird like that. I always go overkill with parentheses.

    Had I done it

    Would've turned out

    (ln(x))^2

    Baroque And Roll on
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  • unintentionalunintentional smelly Registered User regular
    edited November 2009
    I probably could have used more brackets

    but like I was 98% sure I had gotten the question right anyway so I didn't care too much

    unintentional on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    I'm surprised my bracket button on my 86 isn't broken by now

    Squall on
  • L|amaL|ama Registered User regular
    edited November 2009
    Nah, notation is weird like that. I always go overkill with parentheses.

    Had I done it

    Would've turned out

    (ln(x))^2

    yeah same, especially with my calculator. It can make it kinda hard to figure what's actually multiplying what, but it's better to be right than to know what you're doing.

    I already use wolframalpha more than my textbooks, haha.

    L|ama on
  • ComahawkComahawk Registered User regular
    edited November 2009
    I am glad the career I am going for uses mostly trig.

    Comahawk on
  • SirToastySirToasty Registered User regular
    edited November 2009
    I always used as many brackets as made sense in my math classes. I like being extremely clear. If I could put it in brackets or parenthesis then I did.

    SirToasty on
  • SquallSquall hap cloud Registered User regular
    edited November 2009
    hey math guys.

    Have fun with this.

    http://www.wolframalpha.com/

    FIFTY DOLLARS FOR THAT IPOD APP WHAT THE FUCK

    Squall on
  • Baroque And RollBaroque And Roll Every spark of friendship and love Will die without a homeRegistered User regular
    edited November 2009
    There's no reason for me to quotient rule (x^4+24x^3-294x^2-68)/(x^6+56x^4+7) when I can just WolframAlpha is and not make an algebra error.

    Test me on the concepts, not on whether or not I'm anal about reviewing my work.

    Baroque And Roll on
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  • SoaLSoaL fantastic Registered User regular
    edited November 2009
    oh my god

    wolf ram alpha is a genius

    SoaL on
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