A simple mathematical formula has been devised to allow you to calculate the interest due.已经设计出一个能帮你计算应得利息的简单数学公式。He developed a mathematical formula describing the distances of the planets from the Sun.他提出了一个表述行星到太阳距离的数学公式。Those mathematical formulas make people dizzy.那些数学公式把人弄得晕头转向。