数值分析实验附录目录第一部分 非线性方程求解...................................................1第 1 题................................................................1第 2 题................................................................2第 3 题................................................................4第 4 题................................................................4第 5 题................................................................5第二部分 高斯列主元消去法.................................................6第 1 题................................................................6第三部分 龙格现象的产生与克服.............................................9第 1 题................................................................9第 2 题...............................................................10第四部分 曲线拟合的最小二乘法............................................11第 1 题...............................................................11第五部分 龙贝格积分法....................................................11第 1 题...............................................................11第六部分 常微分方程初值问题的数值解法....................................13第 1 题...............................................................13第 2 题...............................................................15第 3 题...............................................................17第一部分 非线性方程求解第 1 题题目 1.1结果clcclear%数值试验 1.1f1=@(x)sin(x)-x^2/2;a=1;b=2;x=nabisect(f1,a,b,0.5e-5);次数近似值ab精度01.5120.511.2511.50.2521.3751.251.50.12531.43751.3751.50.062541.406251.3751.43750.0312551.3906251.3751.406250.01562561.398431.3906251.406250.007813871.4023441.3984381.406250.00390681.4042971.4023441.406250.00195391.4052731.4042971.406250.000977101.4047851.4042971.4052730.000488111.4045411.4042971.4047850.000244121.4044191.4042971.4045410.000122131.4043581.4042971.4044196.10E-05141.4043881.4043581.4044193.05E-05151.404...
