学业分层测评,阶段一,阶段二,阶段三,1/29,2/29,f,(,a,),f,(,b,)0,一分为二,逐步迫近零点,方程近似解,3/29,f,(,a,),f,(,b,)0,c,f,(,c,),0,(,a,,,c,),(,c,,,b,),|,a,b,|,4/29,5/29,6/29,二分法概念,图,311,7/29,8/29,9/29,10/29,11/29,12/29,用二分法求函数零点近似值,13/29,14/29,15/29,16/29,17/29,用二分法求方程近似解,18/29,19/29,20/29,21/29,22/29,23/29,24/29,25/29,26/29,27/29,28/29,29/29,