作业帮mathematica 线性数据拟合
来源：学生作业帮 编辑：作业帮 分类：综合作业 时间：2024/05/18 07:51:43
mathematica 线性数据拟合
怎么拟合出来的斜率相差这么大的?望指教
rr = {{0.34506,0},{0.35466,0.005},{0.36366,0.01},{0.37344,0.015},{
0.38256,0.02},{0.392,0.025}{0.4015,0.03},{0.41124,
0.035},{0.42044,0.04},{0.43014,0.045}}
k = Fit[rr,{1,x},x]
f = Plot[k,{x,0.34,0.45}]
g = ListPlot[rr]
Show[f,g]
怎么拟合出来的斜率相差这么大的?望指教
rr = {{0.34506,0},{0.35466,0.005},{0.36366,0.01},{0.37344,0.015},{
0.38256,0.02},{0.392,0.025}{0.4015,0.03},{0.41124,
0.035},{0.42044,0.04},{0.43014,0.045}}
k = Fit[rr,{1,x},x]
f = Plot[k,{x,0.34,0.45}]
g = ListPlot[rr]
Show[f,g]
是你在{0.392,0.025}{0.4015,0.03}这两项之间缺少了一个逗号,所以mathematica把它们乘起来作为一项了,所以作出来的散点图会看到有一个点的横坐标特别小,在0.1左右的地方