[問題] 有多個變量的做圖已回收
有五個變數
Qe1;Qea;Qi1;Qia;Qib;
兩個定質
beta=10;
alpha=1;
要符合兩個限制條件
re=(1/3)*log2(1+Qe1/(1+Qi1+(alpha^2)*Qib))+
(1/3)*log2(1+(alpha^2)*Qea/(1+(alpha^2)*Qia+Qib));
ri=(1/3)*log2(1+(beta^2)*Qi1)+
(1/3)*log2(1+(beta^2)*Qia)+
(1/3)*log2(1+(beta^2)*Qib);
我想要做re和ri的關係圖要怎麼寫
這是我原本的寫法
syms Qe1;syms Qea;syms Qi1;syms Qia;syms Qib;
>> alpha=1;
>> beta=10;
>> a=(1/3)*log2(1+Qe1/(1+Qi1+(alpha^2)*Qib));
>> b=(1/3)*log2(1+(alpha^2)*Qea/(1+(alpha^2)*Qia+Qib));
>> re=a+b;
>> c=(1/3)*log2(1+(beta^2)*Qi1);
>> d=(1/3)*log2(1+(beta^2)*Qia);
>> e=(1/3)*log2(1+(beta^2)*Qib);
>> ri=c+d+e;
>> ezplot(re,ri);
??? Error using ==> ezplot>ezparam
Cannot plot parametrized surfaces. Try ezsurf.
Error in ==> ezplot at 159
[hp,cax] = ezparam(cax,f{1},f{2},vars,labels,args{2:end});
Error in ==> sym.ezplot at 51
h = ezplot(f(1).s,f(2).s);
但是出現以上的error，不好意思是初學者，可以請大家幫忙一下嗎?
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