I cannot figure out how to fix this error "Objective function is returning undefined values at initial point. fsolve cannot continue."
1 view (last 30 days)
Show older comments
function dummyhw8
clc
x0=[1,1,1,0.02,0,02,0.02];
x=fsolve(@fcn,x0);
disp ('Velocities are the first three values. Whereas friction is last 3.');
disp(x);
function z=fcn(x)
z(1)=x(1)-(0.64*x(2))-(0.64*x(3)); % where x1=v1 x2=v2 and x3=v3
z(2)=40-(102*x(4)*x(1)^2)-(127*x(5)*x(2)^2); % where x4=f1 x5=f2 x6=f3
z(3)=60-(102*x(4)*x(1)^2)-(127*x(6)*x(3)^2);
z(4)=1/sqrt(x(4))+2.0*log10((4.5e-4/3.7)+2.81e-5/x(1)/sqrt(x(4)));
z(5)=1/sqrt(x(5))+2.0*log10((5.625e-4/3.7)+3.52e-5/x(2)/sqrt(x(5)));
z(6)=1/sqrt(x(6))+2.0*log10((5.625e-4/3.7)+3.52e-5/x(3)/sqrt(x(6)));
5 Comments
See Also
Categories
Find more on Time Series Events in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!