处理实验数据时常要用到在曲线的某点上作切线的处理,其中包括求切线的斜率,这就是图解微分法。这是不容易做得好的,常是稍一粗心,误差就达到百分之几十。这里提出的一种方法经大量实践说明容易掌握 Often used to deal with experimental data at a point on the curve tangential processing, including the tangent to find the slope, which is the graphic differential method. It is not easy to do well, often carelessly, and the error reaches tens of percent. One of the methods presented here is easy to grasp after extensive practice