Please Help Me!

Discussion in 'Math' started by zachary_za, Sep 3, 2007.

  1. zachary_za

    Thread Starter New Member

    Sep 3, 2007
    1
    0
    Hello friends,
    I am studying in 10th class. Actually I have a question and I’m unable to solve this question. My question is: How can we find the square root of a number by hand? How about cube roots? If anybody can solve my question I will grateful. Thanks in advance!
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    There are a number of numerical anaylsis techniques available for determining the Nth root of a number.

    The one that comes immediately to mind is the Newton-Raphson Method. It entails a knowledge of calculus specifically derivatives.

    hgmjr
     
  3. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    A wonderfully tedious but successful method is simple long division, where to divisor is squared before being subtracted from the dividend.
     
  5. alexander

    New Member

    Sep 3, 2007
    1
    0
    Hi zachary_za,
    I’m studying in 12th class. I can solve you question easily but I don’t have time for that so I would recommend you for a place called mindzinger where you can get any solution any time and regularly. I got it when was in 10th class. I used mindzinger and I got distinction in mathematics. It’s really nice place for getting solutions for all categories. Hope this will help you.
    Good luck!
     
  6. Papabravo

    Expert

    Feb 24, 2006
    10,137
    1,786
    Once upon a time I learned the manual method for extracting square roots. Rest assured that you can discover it if you search long enough and hard enough. I cannot remember it well enough to describe it since very soon after I learned it I graduated to using a slide rule.

    I remember a poor friend of mine who couldn't afford the $29.95 for Eugene Dietzen Log-Log Duplex Deci-Trig and committrd to memory the table of four place logarithms. He could do square roots in the twinkling of an eye. It's just the anti-log of half the log of the number of interest.
     
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