课前探究学习,活页规范训练,单击此处编辑母版文本样式,课堂讲练互动,f,(,a,),f,(,b,)0,一分为二,逐步逼近为零点,方程的近似解,f,(,a,),f,(,b,)0,x,1,就是函数的零点,a,,,x,1,x,1,,,b,a,n,,,b,n,a,n,,,b,n,端点,(,中点,),坐标,端点或中点函数值,取区间,f,(1.687 5),0.561 80,(1.687 5,1.75),f,(1.718 75),0.170 70,(1.718 75,1.734 375),f,(1.726 562 5),0.070 740,(1.726 562 5,,,1.734 375),