Saturday, March 24, 2007

My best buddy for next week

How to solve this brain-wacking equation??
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x^3 + (10^-7.5)x^2 - (3.162 x 10^-10)x - (3.1623x10^-22) = 0
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Easy way out - use Microsoft excel to plot a graph....
at

7 comments:

  1. JHSun Mar 25, 01:18:00 AM

    MATLAB will be a better way. =)

    ReplyDelete
  2. The FABtastic OneSun Mar 25, 09:39:00 AM

    i got graphing calculator!!!!

    ReplyDelete
  3. Azure1984Sun Mar 25, 12:08:00 PM

    currytan: isit?? then I am handicapped already!! I don't know how to use MATLAB... Argzzz
    .
    Fabtastic: erm, I don't have a graphic calculator leh.. hmmm...

    ReplyDelete
  4. pwSun Mar 25, 12:14:00 PM

    dissolve in water and do titration with standard to find unknown x

    ReplyDelete
  5. JHSun Mar 25, 04:36:00 PM

    Use the following commands for MATLAB:

    p = [a b c d] --this is to create a polynomial.

    then, roots(p) -- this is to ask matlab to compute the roots of p for you! =)

    ReplyDelete
  6. Azure1984Sun Mar 25, 10:43:00 PM

    pw: haha, sure sure, but then how to get the numbers into the standard?? hmm, looks like have to consult a Maths Major already... haha

    currytan:ohh, icic, hmm looks easy, hah kk thanks, then I go sch and try out the MATLAB.haha

    ReplyDelete
  7. pwMon Mar 26, 02:44:00 PM

    weigh the unknown first then dissolve and make to mark in at 250ml volumetric flask. Then titration will tell u the moles. Aiya, if u still duno then i give me personal coaching.

    ReplyDelete