Parse error at ']'

Question

Emilie Orfanakis 2020-11-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/652818-parse-error-at

回答： James Tursa 2020-11-19

I have been struggling with this code for a few days now, and I feel like I have tried everything to try and figure it out. I get a parse error after the double subs function every time! Please help

clear
i = [1.04,1.257,1.304,1.461,1.626];
di = 0.01;
r = [0.052,0.0485,0.0475,0.046,0.0415];
dr = 0.005;
v=300
dv=1
k = ((2)*((5/4)^3)*((0.15)^2))/((120*(4*pi*10^(-7))^2));
syms R I V dR dI dV
em = (k*V)/((I^2)*(R^2));
dEMdR=diff(EM,R);
dEMdI=diff(EM,I);
dEMdV=diff(EM,V);
dEM=sqrt((dEMdI*dI)^2+(dEMdR*dR)^2+(dEMdV*dV)^2)
dem=double(subs(dEM,[R,I,V,dR,dI,dV],[r,i,v.dr.di.dv.]))