Question

能帮我做一道插值与拟合的题吗?一些数据给你打好了temps=20:5:60;press=[805 985 1170 13

Answer 1

clc;clear

temps=20:5:60;

press=[805 985 1170 1365 1570 1790 2030 2300 2610];

t=20:3:60;

plot(temps,press,'+')

hold on

p=polyfit(temps,press,1);

y=polyval(p,75)

x=linspace(20,60,100);

h=p(1)*x+p(2);

plot(x,h)

P_44=(1790*(44-40)+1570*(45-44))/((45-44)+(44-40))