几何概型是区别于古典概型的又一概率模型,一直是高考考查的热点内容。学生在学习过程中由于对题意理解不清或者概念把握不准,往往会给出一些似是而非的错误解答。下面,笔者对几何概型问题的几种常见的错误类型进行剖析,供读者参考。1题意理解不清例1设关于x的一元二次方程x~2+2ax+b~2=0,若a是从区间[0,3]任取的一个数,b是从区间[0, The geometric model is another probability model that is different from the classical one. It has always been a hot topic for college entrance examination. Students in the learning process because of the unclear understanding of the concept or not grasp the concept, often give some paradoxical wrong answer. Below, I analyze several common types of errors in the geometry of the problem, for readers reference. 1 problem ambiguous Example 1 Let x be a quadratic equation x ~ 2 + 2ax + b ~ 2 = 0, if a is a number from any interval [0,3], b is from the interval [0 ,