1)product to sum formula,积化和差公式2)sum to product formula,和化积公式3)error formula in integration,积分误差公式4)differential and integral formulas,微分和积分公式5)product and sum formula,和积互变公式6)composite integral formula,复化求积公式
用法和例句
In this paper, the differential and integral formulas for area coordinates in quadrilateral elements are presented.