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  2. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    Note that if n 2 is the closest perfect square to the desired square x and d = x - n 2 is their difference, it is more convenient to express this approximation in the form of mixed fraction as . Thus, in the previous example, the square root of 15 is 4 − 1 8 . {\displaystyle 4{\tfrac {-1}{8}}.}

  3. Significand - Wikipedia

    en.wikipedia.org/wiki/Significand

    The fractional part is called the fraction. To understand both terms, notice that in binary, 1 + mantissa ≈ significand, and the correspondence is exact when storing a power of two. This fact allows for a fast approximation of the base-2 logarithm, leading to algorithms e.g. for computing the fast square-root and fast inverse-square-root.

  4. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Russian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration camp. The rest of this article presents some methods devised by Trachtenberg.

  5. Keyboard shortcuts in AOL Mail

    help.aol.com/articles/keyboard-shortcuts-in-aol-mail

    Keyboard shortcuts make it easier and quicker to perform some simple tasks in your AOL Mail. Access all shortcuts by pressing shift+? on your keyboard. All shortcuts are formatted for Windows computers, but most will work on a Mac by substituting Cmd for Ctrl or Option for Alt. General keyboard shortcuts

  6. Kewala's Typing Adventure - Wikipedia

    en.wikipedia.org/wiki/Kewala's_Typing_Adventure

    Kewala's Typing Adventure [a] is a 1996 Australian educational typing-themed video game, featuring a koala protagonist named Kewala.It was developed by Sydney-based software company Typequick, and localised by Japan Data Pacific for the Japanese market.

  7. Baby Animals 101: Fun Names and Surprising Facts - AOL

    www.aol.com/baby-animals-101-fun-names-060600027...

    For now, have fun learning about each of these creatures. And if you can click here to download and print the infographic, too!

  8. Christina Aguilera Poses Nearly Nude to Mark Her 44th ... - AOL

    www.aol.com/lifestyle/christina-aguilera-poses...

    Christina Aguilera is leaving nothing behind as she turns another year older.. On Wednesday, Dec. 18, the singer posted a nearly nude black and white photo of herself on Instagram to mark her 44th ...

  9. Heaviside cover-up method - Wikipedia

    en.wikipedia.org/wiki/Heaviside_cover-up_method

    When a partial fraction term has a single (i.e. unrepeated) binomial in the denominator, the numerator is a residue of the function defined by the input fraction. We calculate each respective numerator by (1) taking the root of the denominator (i.e. the value of x that makes the denominator zero) and (2) then substituting this root into the ...

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