Loop in solve system of nonlinear equations

6 Ansichten (letzte 30 Tage)
Krystian Fornal
Krystian Fornal am 17 Okt. 2019
Kommentiert: Krystian Fornal am 17 Okt. 2019
I have a problem with loop "for" in Solve system of nonlinear equations. I can solve nonlinear equations like this:
R=68.4043297;
V = [teta1; teta2];
F = @(V) [R-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
XYA= fsolve(F, InitialGuess, Options);
but I have to change parametr R.
R=45:0.1:95
How do it?

Antworten (1)

Wiley Mosley
Wiley Mosley am 17 Okt. 2019
By calling the index of R in the for loop you should be able to save the XYA in an array so that you have the solutions for all values of R.
R=45:0.1:95;
for ii = 1:numel(R);
V = [teta1; teta2];
F = @(V) [R(ii)-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
XYA(ii)= fsolve(F, InitialGuess, Options);
end
  2 Kommentare
Krystian Fornal
Krystian Fornal am 17 Okt. 2019
But I get this:
Unable to perform assignment because the left and right sides have a different number of elements.
Error in Untitled3 (line 5)
XYA(ii)= fsolve(F, InitialGuess, Options);
Krystian Fornal
Krystian Fornal am 17 Okt. 2019
But now i've got a solution:
R=linspace(45,95,11);
for i=1:11
V = [teta1; teta2];
F = @(V) [R(1,i)-(37.5*sqrt(3))+(75*cos(V(1)))-(75*cos(V(2))); 97.5+37.5+(75*sin(V(1))) - (54.4818+75*sin(V(2)))];
InitialGuess = [2;2];
Options=optimset('Display','off');
XY(2:3,i)= fsolve(F, InitialGuess, Options);
XY(1,i)=R(1,i);
end

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Startup and Shutdown finden Sie in Help Center und File Exchange

Produkte

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by