问题描述:
matlab程序出现了错误,不知道哪里出错了
syms a b ;
c=[a b]';
A=[2.9 3.6 4.5 5.88 8.1];
B=cumsum(A);
n=length(A);
for i=1:(n-1)
c(i)=(B(i)+B(i+1))/2;
end
D=A;D(1)=[];
D=D';
E=[-C;ones(1,n-1)];
c=inv(E*E')*E*D;
c=c';
a=c(1);b=c(2);
F=[];F[1]=A(1);
for i=2:(n+10)
F(i)=(A(1)-b/a)/exp(a*(i-1))+b/a;
end
G=[];G(1)=A(1);
for i=2:(n+10)
G(i)=F(i)-F(i-1);
end
t1=2008:2012;
t2=2008:2017;
G
plot(t1,A,'o',t2,G)
这样的程序
clearsyms a b ;
c=[a b]';
A=[2.9 3.6 4.5 5.88 8.1];
B=cumsum(A);
n=length(A);
for i=1:(n-1)
c(i)=(B(i)+B(i+1))/2;
end
D=A;D(1)=[];
D=D';
E=[-C;ones(1,n-1)];
c=inv(E*E')*E*D;
c=c';
a=c(1);b=c(2);
F=[];F[1]=A(1);
for i=2:(n+10)
F(i)=(A(1)-b/a)/exp(a*(i-1))+b/a;
end
G=[];G(1)=A(1);
for i=2:(n+10)
G(i)=F(i)-F(i-1);
end
t1=2008:2012;
t2=2008:2017;
G
plot(t1,A,'o',t2,G)
问题解答:
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