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  2. Dividing a circle into areas - Wikipedia

    en.wikipedia.org/wiki/Dividing_a_circle_into_areas

    The lemma establishes an important property for solving the problem. By employing an inductive proof, one can arrive at a formula for f(n) in terms of f(n − 1).. Proof. In the figure the dark lines are connecting points 1 through 4 dividing the circle into 8 total regions (i.e., f(4) = 8).

  3. Windows Calculator - Wikipedia

    en.wikipedia.org/wiki/Windows_Calculator

    A simple arithmetic calculator was first included with Windows 1.0. [5]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.

  4. Mathematics of paper folding - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_paper_folding

    For instance 1 ⁄ 5 can be generated with three folds; first halve a side, then use Haga's theorem twice to produce first 23 and then 1 ⁄ 5. The accompanying diagram shows Haga's first theorem: = +. The function changing the length AP to QC is self inverse.

  5. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    1 2 5 (Explanations) 4)500 1 0 ( 5 - 4 = 1) 2 0 (10 - 8 = 2) 0 (20 - 20 = 0) In Bolivia , Brazil , Paraguay , Venezuela , French-speaking Canada , Colombia , and Peru , the European notation (see below) is used, except that the quotient is not separated by a vertical line, as shown below:

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  7. Dividing engine - Wikipedia

    en.wikipedia.org/wiki/Dividing_engine

    Dividing engine at the Museo Galileo in Florence.. There has always been a need for accurate measuring instruments. Whether it is a linear device such as a ruler or vernier or a circular device such as a protractor, astrolabe, sextant, theodolite, or setting circles for astronomical telescopes, the desire for ever greater precision has always existed.

  8. Finder - Wikipedia

    en.wikipedia.org/wiki/Finder

    Finder may refer to: . Finder, a comic book series by Carla Speed McNeil; Finder, a manga series by Ayano Yamane; Finder, a 1994 novel by Emma Bull; Finder (software), part of the Apple Macintosh operating system

  9. Division by infinity - Wikipedia

    en.wikipedia.org/wiki/Division_by_infinity

    The hyperbola = /.As approaches ∞, approaches 0.. In mathematics, division by infinity is division where the divisor (denominator) is ∞.In ordinary arithmetic, this does not have a well-defined meaning, since ∞ is a mathematical concept that does not correspond to a specific number, and moreover, there is no nonzero real number that, when added to itself an infinite number of times ...