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  2. Romberg's method - Wikipedia

    en.wikipedia.org/wiki/Romberg's_method

    The second extrapolation, R(n, 2), is equivalent to Boole's rule with 2 n + 1 points. The further extrapolations differ from Newton-Cotes formulas. In particular further Romberg extrapolations expand on Boole's rule in very slight ways, modifying weights into ratios similar as in Boole's rule.

  3. Midpoint method - Wikipedia

    en.wikipedia.org/wiki/Midpoint_method

    The midpoint method computes + so that the red chord is approximately parallel to the tangent line at the midpoint (the green line). In numerical analysis , a branch of applied mathematics , the midpoint method is a one-step method for numerically solving the differential equation ,

  4. Constant of integration - Wikipedia

    en.wikipedia.org/wiki/Constant_of_integration

    The constant is a way of expressing that every function with at least one antiderivative will have an infinite number of them. Let F : R → R {\displaystyle F:\mathbb {R} \to \mathbb {R} } and G : R → R {\displaystyle G:\mathbb {R} \to \mathbb {R} } be two everywhere differentiable functions.

  5. Riemann sum - Wikipedia

    en.wikipedia.org/wiki/Riemann_sum

    If = (+) / for all i, the method is the midpoint rule [2] [3] and gives a middle Riemann sum. If f ( x i ∗ ) = sup f ( [ x i − 1 , x i ] ) {\displaystyle f(x_{i}^{*})=\sup f([x_{i-1},x_{i}])} (that is, the supremum of f {\textstyle f} over [ x i − 1 , x i ] {\displaystyle [x_{i-1},x_{i}]} ), the method is the upper rule and gives an upper ...

  6. Antiderivative - Wikipedia

    en.wikipedia.org/wiki/Antiderivative

    The slope field of () = +, showing three of the infinitely many solutions that can be produced by varying the arbitrary constant c.. In calculus, an antiderivative, inverse derivative, primitive function, primitive integral or indefinite integral [Note 1] of a continuous function f is a differentiable function F whose derivative is equal to the original function f.

  7. Gauss–Legendre method - Wikipedia

    en.wikipedia.org/wiki/Gauss–Legendre_method

    The Gauss–Legendre method of order two is the implicit midpoint rule. ... can fall below ... The method of order 2 is just an implicit midpoint method.

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  9. Multiple integral - Wikipedia

    en.wikipedia.org/wiki/Multiple_integral

    When the integrand is a constant function c, the integral is equal to the product of c and the measure of the domain of integration. If c = 1 and the domain is a subregion of R 2, the integral gives the area of the region, while if the domain is a subregion of R 3, the integral gives the volume of the region. Example. Let f(x, y) = 2 and