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How to solve the attached differential equations using Mathematica

  1. Aug 31, 2012 #1
    Hello everyone,

    I am making use of Mathematica to solve differential equations developed by Lagrange method,

    I have met some problems in solving the equations,

    I cannot obtain the correct result even though I have set "t" and "MaxSteps" both as "Infinity". I have run the program for 7 hours, but it cannot stop calculation under the condition that

    I don't know much about how to set the parameters of NDSolve functions
    properly in order to get correct results?

    The program I have run is as the attached, I appreciate any help from you.

    Attached Files:

  2. jcsd
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