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  2. Elementary mathematics - Wikipedia

    en.wikipedia.org/wiki/Elementary_mathematics

    An example is the function that relates each real number x to its square x 2. The output of a function f corresponding to an input x is denoted by f(x) (read "f of x"). In this example, if the input is −3, then the output is 9, and we may write f(−3) = 9. The input variable(s) are sometimes referred to as the argument(s) of the function.

  3. Boy Calls 911 for Homework Help Because Nobody in His Family ...

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    The Shawano County Sheriff's Office in Wisconsin was notified of a 911 call made by a 10-year-old boy who was having math trouble. Deputy Chase Mason responded to the call and together they were ...

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  5. 24 (puzzle) - Wikipedia

    en.wikipedia.org/wiki/24_(puzzle)

    The original version of 24 is played with an ordinary deck of playing cards with all the face cards removed. The aces are taken to have the value 1 and the basic game proceeds by having 4 cards dealt and the first player that can achieve the number 24 exactly using only allowed operations (addition, subtraction, multiplication, division, and parentheses) wins the hand.

  6. Mathematical notation - Wikipedia

    en.wikipedia.org/wiki/Mathematical_notation

    For example, the physicist Albert Einstein's formula = is the quantitative representation in mathematical notation of mass–energy equivalence. [ 1 ] Mathematical notation was first introduced by François Viète at the end of the 16th century and largely expanded during the 17th and 18th centuries by René Descartes , Isaac Newton , Gottfried ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Your family likely wants to avoid political talk this ...

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    Americans said they are the most grateful for family and friends, 79 percent. Seventy-one percent said they were most grateful for health while freedom ranked third at 58 percent, according to the ...

  9. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    Given a set with an addition operation, one cannot always define a corresponding subtraction operation on that set; the set of natural numbers is a simple example. On the other hand, a subtraction operation uniquely determines an addition operation, an additive inverse operation, and an additive identity; for this reason, an additive group can ...