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  2. Numerical differentiation - Wikipedia

    en.wikipedia.org/wiki/Numerical_differentiation

    Using complex variables for numerical differentiation was started by Lyness and Moler in 1967. [20] Their algorithm is applicable to higher-order derivatives. A method based on numerical inversion of a complex Laplace transform was developed by Abate and Dubner. [ 21 ]

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    This notation consists of symbols used for representing operations, unspecified numbers, relations and any other mathematical objects, and then assembling them into expressions and formulas. [94] More precisely, numbers and other mathematical objects are represented by symbols called variables, which are generally Latin or Greek letters, and ...

  4. List of educational programming languages - Wikipedia

    en.wikipedia.org/wiki/List_of_educational...

    Little Computer 3 (LC-3), (2019) is an assembly language with a simplified instruction set, enabling the writing of moderately complex assembly programs. It includes many features found in more advanced languages, making it useful for teaching basic programming and computer architecture .

  5. Reading - Wikipedia

    en.wikipedia.org/wiki/Reading

    Reading is the process of taking in the sense or meaning of symbols, often specifically those of a written language, by means of sight or touch. [1] [2] [3] [4]For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spelling), alphabetics, phonics, phonemic awareness, vocabulary, comprehension, fluency, and motivation.

  6. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    [3] Words combine to form phrases. A phrase typically serves the same function as a word from some particular word class. [3] For example, my very good friend Peter is a phrase that can be used in a sentence as if it were a noun, and is therefore called a noun phrase.

  7. Ancient Egypt - Wikipedia

    en.wikipedia.org/wiki/Ancient_Egypt

    They were aware, for example, that a triangle had a right angle opposite the hypotenuse when its sides were in a 3–4–5 ratio. [193] They were able to estimate the area of a circle by subtracting one-ninth from its diameter and squaring the result: Area ≈ [(8 ⁄ 9)D] 2 = (256 ⁄ 81)r 2 ≈ 3.16r 2, a reasonable approximation of the ...