Question: Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system

Good day Sirs;

     Please, anyone with informations on the error "Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system". I can't understand what it means.

     Attached below is the code.

    Thank you in advance.

New.mw

Please Wait...