把6个点用MATLAB拟合,并得出函数,其中a为横坐标N为纵坐标 (貌似是条直 ...答:clear all;close all;a=[-0.2142,-0.3087,-0.3938,-0.8153,-0.9323,-1.5011];N=[13945,19395,26250,33967,36914,51328];plot(a,N,'*','markersize',3)grid on %画图并观察离散数据的特性 p=polyfit(a,N,1); %用1次多项式进行拟合 f = polyval(p,a);hold on plot(a,f,'r...