[理工] [ODE]
Solve the system of differential equations as follow
dx/dt=4x-2y
dy/dt=x+y x(0)=6 y(0)=3
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Dx-4x=-2y . x(D-4)=-2y .......(1)
Dy-y=x . y(D-1)=x ...........(2)
y(D-1)(D-4)=-2y
y(D-2)(D-3)=0 , y(t) = c1e^2t+c2e^3t
之後就卡住了= =.........
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