- trapezoidal number
- мат. трапецеидальное число
Большой англо-русский и русско-английский словарь. 2001.
trapezoidal number
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Trapezoidal rule — This article is about the quadrature rule for approximating integrals. For the Explicit trapezoidal rule for solving initial value problems, see Heun s method. The function f(x) (in blue) is approximated by a linear function (in red). In… … Wikipedia
Triangular number — The first six triangular numbers A triangular number or triangle number numbers the objects that can form an equilateral triangle, as in the diagram on the right. The nth triangle number is the number of dots in a triangle with n dots on a side;… … Wikipedia
Perfect number — In number theory, a perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself (also known as its aliquot sum). Equivalently, a perfect… … Wikipedia
List of musical instruments by Hornbostel-Sachs number: 321.322 — This is a list of instruments by Hornbostel Sachs number, covering those instruments that are classified under 321.322 under that system. These instruments may be known as necked box lutes or necked guitars. 3: Instruments in which sound is… … Wikipedia
Trapezoid — For other uses, see Trapezoid (disambiguation) and Trapezium (disambiguation). Trapezoid (AmE) Trapezium (BrE) A Trapezoid Type quadrilateral Edges and … Wikipedia
Point location — The point location problem is a fundamental topic of computational geometry. It finds applications in areas that deal with processing geometrical data: computer graphics, geographic information systems (GIS), motion planning, and computer aided… … Wikipedia
Numerical integration — consists of finding numerical approximations for the value S In numerical analysis, numerical integration constitutes a broad family of algorithms for calculating the numerical value of a definite integral, and by extension, the term is also… … Wikipedia
Simpson's rule — can be derived by approximating the integrand f (x) (in blue) by the quadratic interpolant P (x) (in red). In numerical analysis, Simpson s rule is a method for numerical integration, the numerical approximation of definite integrals.… … Wikipedia
Sniper! (board game) — Sniper! was a board wargame originally released in 1973. Some sources refer to Sniper/Patrol as a sort of series of games: a similar game by Simulations Publications Inc. (SPI) was released at the same time as the original Sniper! , called Patrol … Wikipedia
stringed instrument — a musical instrument having strings as the medium of sound production, played with the fingers or with a plectrum or a bow: The guitar, the harp, and the violin are stringed instruments. * * * Any musical instrument that produces sound by the… … Universalium
Clenshaw–Curtis quadrature — and Fejér quadrature are methods for numerical integration, or quadrature , that are based on an expansion of the integrand in terms of Chebyshev polynomials. Equivalently, they employ a change of variables x = cos θ and use a discrete… … Wikipedia
