Error with function derivative.
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
I have the following function
miu=0.1;
u=[1 1 1 1 1 1];
niu=u(6);
Syms x1,x2
FunctionP=@(x1,x2)(x1^4-2*x1^2*x2+x1^2-2*x1+4)+...
miu*((max((0.25*x1^2-0.75*x2^2-1+u(1)/2*miu),0)^2)+(max((-x1+u(2)/2*miu),0)^2)+...
(max((x1-5+u(3)/2*miu),0)^2)+(max((-x2+u(4)/2*miu),0)^2)+(max((x2-5+u(5)/2*miu),0)^2))...
-(((u(1)^2)/(4*miu))+((u(2)^2)/(4*miu))+((u(3)^2)/(4*miu))+((u(4)^2)/(4*miu))+((u(5)^2)/(4*miu)))...
+niu*(2*x1^2+x2^2-2)+miu*(2*x1^2+x2^2-2)^2;
FunctionDiff_x1 = diff(FunctionP,x1);
FunctionDiff_x2 = diff(FunctionP,x2);
x=[0,3];
x1=x(1);
x2=x(2);
t=eval(FunctionDiff_x1);
I obtain the following error:
??? Error: ()-indexing must appear last in an index expression.
Error in ==> sym.eval at 15 s = evalin('caller',vectorize(map2mat(char(x))));
Error in ==> Problem3b at 61 t=eval(FunctionDiff_x1);
0 Kommentare
Antworten (0)
Siehe auch
Kategorien
Mehr zu Numbers and Precision 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!