Question: Warning, The use of global variables in numerical ODE problems is deprecated, and will be removed in a future release. Use the 'parameters' argument instead (see ?dsolve,numeric,parameters)

Hi

I use dsolve( sys ode, ics)  and  dsolve( sys, ics, numeric) but both does not gives any solution of the system proposed. 
May be I must fix some parameter or something else.

problemdisplaysolution.mw

 

many thinks

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