第三章 函数的应用
f(1)=-2f(1.5)=0.625f(1.25)≈-0.984f(1.375)≈-0.260f(1.4375)≈0.162f(1.40625)≈-0.054
取值区间中点值中点函数近似值区间长度(0,1)0.5-0.00811(0.5,1)0.750.28050.5(0.5,0.75)0.6250.14750.25(0.5,0.625)0.56250.07300.125
f(1.6000)≈0.200f(1.5875)≈0.133f(1.5750)≈0.067f(1.5625)≈0.003f(1.55625)≈-0.029f(1.5500)≈-0.060
(a,b)(a,b)的中点中点函数值符号(1,1.5)1.25f(1.25)<0(1.25,1.5)1.375f(1.375)>0(1.25,1.375)1.3125f(1.3125)<0(1.3125,1.375)1.34375f(1.34375)>0(1.3125,1.34375)1.328125f(1.328125)>0(1.3125,1.328125)1.3203125f(1.3203125)<0