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  2. Polynomial lemniscate - Wikipedia

    en.wikipedia.org/wiki/Polynomial_lemniscate

    An interesting example of such polynomial lemniscates are the Mandelbrot curves. If we set p 0 = z, and p n = p n−1 2 + z, then the corresponding polynomial lemniscates M n defined by |p n (z)| = 2 converge to the boundary of the Mandelbrot set. [2] The Mandelbrot curves are of degree 2 n+1. [3]

  3. Generating function - Wikipedia

    en.wikipedia.org/wiki/Generating_function

    In mathematics, a generating function is a representation of an infinite sequence of numbers as the coefficients of a formal power series.Generating functions are often expressed in closed form (rather than as a series), by some expression involving operations on the formal series.

  4. Graph of a function - Wikipedia

    en.wikipedia.org/wiki/Graph_of_a_function

    Given a function: from a set X (the domain) to a set Y (the codomain), the graph of the function is the set [4] = {(, ()):}, which is a subset of the Cartesian product.In the definition of a function in terms of set theory, it is common to identify a function with its graph, although, formally, a function is formed by the triple consisting of its domain, its codomain and its graph.

  5. Matching polynomial - Wikipedia

    en.wikipedia.org/wiki/Matching_polynomial

    The matching polynomial of a graph G with n vertices is related to that of its complement by a pair of (equivalent) formulas. One of them is a simple combinatorial identity due to Zaslavsky (1981). The other is an integral identity due to Godsil (1981). There is a similar relation for a subgraph G of K m,n and its complement in K m,n. This ...

  6. Linear congruential generator - Wikipedia

    en.wikipedia.org/wiki/Linear_congruential_generator

    A structure similar to LCGs, but not equivalent, is the multiple-recursive generator: X n = (a 1 X n−1 + a 2 X n−2 + ··· + a k X n−k) mod m for k ≥ 2. With a prime modulus, this can generate periods up to m k −1, so is a useful extension of the LCG structure to larger periods.

  7. Asymptote - Wikipedia

    en.wikipedia.org/wiki/Asymptote

    In the first case the line y = mx + n is an oblique asymptote of ƒ(x) when x tends to +∞, and in the second case the line y = mx + n is an oblique asymptote of ƒ(x) when x tends to −∞. An example is ƒ ( x ) = x + 1/ x , which has the oblique asymptote y = x (that is m = 1, n = 0) as seen in the limits

  8. Infinitesimal generator (stochastic processes) - Wikipedia

    en.wikipedia.org/wiki/Infinitesimal_generator...

    The generator is used in evolution equations such as the Kolmogorov backward equation, which describes the evolution of statistics of the process; its L 2 Hermitian adjoint is used in evolution equations such as the Fokker–Planck equation, also known as Kolmogorov forward equation, which describes the evolution of the probability density ...

  9. Presentation of a group - Wikipedia

    en.wikipedia.org/wiki/Presentation_of_a_group

    If we then let N be the subgroup of F generated by all conjugates x −1 Rx of R, then it follows by definition that every element of N is a finite product x 1 −1 r 1 x 1... x m −1 r m x m of members of such conjugates. It follows that each element of N, when considered as a product in D 8, will also evaluate to 1; and thus that N is a ...