syms r1(t) r2(t) real %criar var simbolicas r=[r1;r2]; A = [0 1; -2 -3]; r0_1=[1;-1]; system=[diff(r) == A*r, r(0) == r0_1] %sistema r_solved=dsolve(system); fplot(r_solved.r1,r_solved.r2,[0 2]) hold on r0_2=[-1;1]; system=[diff(r) == A*r, r(0) == r0_2] %sistema r_solved=dsolve(system); fplot(r_solved.r1,r_solved.r2,[0 2]) r0_2=[-1;-1]; system=[diff(r) == A*r, r(0) == r0_2] %sistema r_solved=dsolve(system); fplot(r_solved.r1,r_solved.r2,[0 2])