# Definite Integral

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## Definite Integral

one of the fundamental concepts of mathematical analysis; the solution of a number of problems in geometry, mechanics, and physics reduces to a definite integral. The definite integral is a number equal to the limit of the sums of a particular type (integral sums) corresponding to a function f(x) and an interval [a, b]; it is denoted by . Geometrically, the definite integral expresses the area of a “curvilinear trapezoid” bounded by the interval [a, b] on the x-axis, the graph of the function f(x), and the ordinates of the points on the graph that have abscissas a and b. For a precise definition and generalization of the definite integral, seeINTEGRAL and INTEGRAL CALCULUS.

References in periodicals archive ?
Obviously, this is an 8-fold definite integral which could be computed with the proposed number theory based numerical integration.
Thus, in general, the probability 1/4[pi][OMEGA] expressed in terms of definite integrals (14)-(15), which, in turn, can be calculated by known methods.
Compute operands weights as a definite integrals of f(x).
He made significant contributions to number theory, definite integrals, and series.
For the price of a calculus textbook, any student can buy a scientific calculator that numerically solves equations and evaluates definite integrals -- two important operations in calculus.
Mastering and applying the first and second fundamental theorems of calculus to compute definite integrals
The prerequisites are a stiff course in basic calculus with a few facts about partial derivatives, definite integrals, a few topics from advanced calculus such as Leibniz's rule for differentiating under the integral sign, and to some extent, analysis of infinite series.
He pays special attention to formulas of derivatives of nth-order (with respect to the argument) and of the first derivatives (with respect to the parameter) for most elementary and special functions, covering the derivatives (including the Hurwitz zeta function and Fresnel integrals) limits (including special functions), indefinite integrals (including elementary and special functions), definite integrals (including Bessel, Mcdonald, Struve, Kelvin, Legendre, Chebyshev, Hermite, Laguerre and Jacobi functions and polynomials), finite sums, infinite series, the connection formulas and representations of hypergeometric functions and of the Meijer G function.
Many books on numerical analysis cover methods for the approximate calculation of definite integrals, say Brass and Petras (both Technische U.
They cover definite integrals, ordinary differential equations systems with case studies, differential and algebraic equation systems with case studies, and boundary value problems.
The nine chapters also develop techniques for using basic integration formula to obtain indefinite integrals of complicated functions, and applies definite integrals to compute areas between curves, volumes of solids, lengths of curves, and work done by a varying force.
Other books on integrals involving Bessel functions mostly discuss definite integrals, and though he also treats definite integrals, he emphasizes indefinite ones.

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