Efficiency v. Equity – Efficiency means society gets the most that it can from its scarce resources. – Equity means the benefits of those resources are distributed fairly among the members of society
产生导数的实际背景 微积分的发明人之一──Newton最早用导数研究的是如何确定 力学中运动物体的瞬时速度问题。 一个运动物体在时刻t 的位移可以用函数s st = ( )来描述,它在时 间段[, ] tt t + Δ 中位移的改变量为Δs s t t st = ( ) () + Δ − ,所以当Δt 很小的时 候,它在时刻t的瞬时速度可以近似地用它在[, ] tt t + Δ 中的平均速度 v t
Molecular Biology of the Gene, 5/E --- Watson et al. (2004) Part I: Chemistry and Genetics Part II: Maintenance of the Genome Part III: Expression of the Genome Part IV: Regulation Part V: Methods 4/3/05