此题有误，两个方程的左侧应是dx/dt,dy/dt [x y]=dsolve('Dx=4*x-2*y', 'Dy=2*x-y','t') x = 2*C2*exp(3*t)+1/2*C1 y = C1+C2*exp(3*t)[x y]=dsolve('Dy=4*x-2*y', 'Dx=2*x-y','t') x = 1/4*C1+1/2*C1*t+1/2*C2 y = C1*t+C2
