YHFT-DX 源代码

sx=24, sy=20 dx=16, dy=16 sx=24, sy=20 dx=16, dy=16 8888888888888888888888888888888888 88 8 88…

S=dsolve('Dx=y,Dy=-x'); disp([blanks(12),'x',blanks(21),'y']) disp([S.x,S.y])

[x,y]=dsolve('D2x+2*Dx=x+2*y-exp(-t)','Dy=4*x+3*y+4*exp(-t)')

% fig7_12 open_system('nmod') [x0,u0,y0,dx]=trim('nmod',[1 1]',1,1,[],1,[])

% fig7_35 open_system('nmod') [x0,u0,y0,dx]=trim('nmod',[1 1]',1,1,[],1,[])

[x,y]=dsolve('D2x+2*Dx=x+2*y-exp(-t)','Dy=4*x+3*y+4*exp(-t)')

function dx=apolloeq(t,x) mu=1/82.45; mu1=1-mu; r1=sqrt((x(1)+mu)^2+x(3)^2); r2=sqrt((x(1)-mu1)^2+x(3)^2); …

function dx=exc7ffo2(t,x,z) xlag1=z(:,1); xlag2=z(:,2); xlag3=z(:,3); dx=[x(2); x(3); x(4); exp(-t.^2)-4*xlag1(4)-…

function dx=c6ximp(t,x) A=[sin(x(1)) cos(x(2)); -cos(x(2)) sin(x(1))]; B=[1-x(1); -x(2)]; dx=inv(A)*B;

function dx=c2ximp(t,x) A=[sin(x(1)) cos(x(2)); -cos(x(2)) sin(x(1))]; B=[1-x(1); -x(2)]; dx=inv(A)*B;