cobweb graph for 3 equations

Question

summyia qamar 2018-1-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/375818-cobweb-graph-for-3-equations

评论： Star Strider 2018-1-7

can I draw the cobweb graph of following Q and D and P?

clear all;
clc;
N=60;
D=zeros(1,N); %demand
Q=zeros(1,N); %supply
P=zeros(1,N); %Price
d=1000; %constant of demand function
q=100; %constant of supply function
a=10; % sensitivity of demand to price
b=9.9; %sensitivity of supply to price
for t=2:N
  P(t)=(P(t-1)-((d-q)/(a+b)))*((-b/a)^t)+((d-q)/(a+b));
  D(t)=d-a*P(t);
  Q(t)=q+b*P(t-1); 
end
%plot
Xvals=1:N;
plot(Xvals,P,'b',Xvals,D,'r',Xvals,Q,'g')
xlabel('time')
legend('Price','Demand','Resource')
title('Demand-Supply Dynamics with Price')