Question: solutions of IVP in other IVP



I  wonder if Maple can solve it. I solve it (by laplace transform)analytically but it consumes time and take time to put in maple in order to plot the solutions. It is too complicated because non-autonomous ODE with complex coeff. further we substitue the solutions of sys1 in sys2 and solve sys2 at the end plot x,y,z.

I get rid of it , realy I need help.

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