syms T t G;

s=-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2);

s1=(-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2))/T;

int(s,T,298,t);

int(s1,T,298,t);

y1=int(s,T,298,t);

y2=t*int(s1,T,298,t);

G=-6045+8.71*t+y1+y2;

m=1;

for t=300:1500;

G(m)=-6045+8.71*t+y1+y2;

m=m+1;

end

plot(t,G(m))

>> syms T t G;
s=-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2);
s1=(-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2))/T;
int(s,T,298,t);
int(s1,T,298,t);
y1=int(s,T,298,t);
y2=t*int(s1,T,298,t);
G=-6045+8.71*t+y1+y2;
m=1;
for t=300:1500;
G(m)=-6045+8.71*t+y1+y2;
m=m+1;
end
plot(t,G(m))
索引超出矩阵维度。

出错 sym/subsref (line 814)
            R_tilde = builtin('subsref',L_tilde,Idx);

之前没有问题？不可能吧？ syms T t G; s=-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2); s1=(-6.56+7.66*10^(-3)*T-2.15*10^(-6)*T^2+0.94*10^5*T^(-2))/T; y1=int(s,T,298,t) y2=t*int(s1,T,298,t) G=-6045+8.71*t+y1+y2 t=300:500 plot(t,subs(G)) [color=rgb(51, 102, 153) !important]复制代码

老师，积分没有具体函数，只有数据点怎么积啊

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