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Math Help - Speeding up Numerical calculations?

  1. #1
    Newbie PowerInside's Avatar
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    Wink Speeding up Numerical calculations?

    Any tips on speeding up the basic arithmetic operations like multiplication and division etc?

    And that of large numbers? I heard logarithms can be used. If so how?
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    Quote Originally Posted by PowerInside View Post
    Any tips on speeding up the basic arithmetic operations like multiplication and division etc?

    And that of large numbers? I heard logarithms can be used. If so how?
    Dear PowerInside,

    In these examples all the calculations are done using logarithms to the base 10.

    Suppose you have to multiply, 1245 and 3241

    1245\times3241=antilog(log1245+log3241); ~using ~the ~rule, ~log(A\times{B})=logA+logB

    1245\times3241=antilog(3.095+3.5106)=antilog(6.605  8)=4035000

    log1245 and log3241 could be found using logarithm tables.

    Using a similar method division could be also done using logarithms. In this case you should use the logarithm rule, \frac{A}{B}=logA-logB

    Hope this will help you.
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  3. #3
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    Quote Originally Posted by PowerInside View Post
    Any tips on speeding up the basic arithmetic operations like multiplication and division etc?

    And that of large numbers? I heard logarithms can be used. If so how?
    Are you using a calculator?
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  4. #4
    Senior Member yeKciM's Avatar
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    Quote Originally Posted by PowerInside View Post
    Any tips on speeding up the basic arithmetic operations like multiplication and division etc?

    And that of large numbers? I heard logarithms can be used. If so how?
    if you are not going to do that by the calculator (like wonderboy1953 asked there ) you can check this out Dead Reckonings Lightning Calculators II: The Methods

    or google "vedic math" there you can find a lot of way to speed up your arithmetic operations so calculations will take less time from when you type things in your calculator


    Vedic Maths Tutorial

    Vedic Mathematics (Tips & Tricks) - Part1

    CAT: Vedic maths to improve speed, accuracy: Rediff Getahead
    Last edited by yeKciM; August 21st 2010 at 11:20 AM.
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  5. #5
    A Plied Mathematician
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    This book has many of the vedic tricks, and more besides. Also check out the sequel.
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