The methods that we used for approximating single integrals all have counterparts for double integrals. The “Midpoint Rule” for double integrals is given in the following equation.

Operations Research : Applications and Algorithms
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Author:Wayne L. Winston
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Chapter11: Nonlinear Programming
Section11.1: Review Of Differential Calculus
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Matlab Question The methods that we used for approximating single integrals all have counterparts for double integrals. The “Midpoint Rule” for double integrals is given in the following equation.
m n
[ƒ ƒ (x, y)dA ≈ŹŹƒ(x,, v; }\µ\x^y
ΣΣΕΣ, ΔΙΔΡ
R
i=1 j=1
(1)
where x, is the midpoint of [x-1, x;] and y, is the midpoint of [y-1, Vj]
For example, eq. (1) can be applied to estimate the volume of the solid (see Fig. 1) that lies above
the square R = [0, 2] X [0, 2] (see Fig. 2) and below the elliptic paraboloid f(x,y) = 16 — x-2y².
Transcribed Image Text:m n [ƒ ƒ (x, y)dA ≈ŹŹƒ(x,, v; }\µ\x^y ΣΣΕΣ, ΔΙΔΡ R i=1 j=1 (1) where x, is the midpoint of [x-1, x;] and y, is the midpoint of [y-1, Vj] For example, eq. (1) can be applied to estimate the volume of the solid (see Fig. 1) that lies above the square R = [0, 2] X [0, 2] (see Fig. 2) and below the elliptic paraboloid f(x,y) = 16 — x-2y².
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