US actress Jessica Simpson has most people's idea of the perfect smile, according to a recent formula made by US scientists.
根据美国科学家近日得出的公式，美国女影星杰西卡·辛普森拥有大多数人心目中的完美笑容。
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We introduced a new and simple proof of the classical SIMPSON quadrature formula which is frequently applied in calculating definite integrals and best estimation of error is obtained.