Abstract
Using Taylor's formula for functions of several variables, the author establishes inequalities for the integral of a function defined on an m-dimensional rectangle, if the partial derivatives remain between bounds. Hence Iyengar's inequality and related resullts in the references could be deduced.
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Qi, F. Inequalities for a Multiple Integral. Acta Mathematica Hungarica 84, 19–26 (1999). https://doi.org/10.1023/A:1006642601341
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DOI: https://doi.org/10.1023/A:1006642601341