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Student Support Forum > General > > "DSolve with a set of equations"

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Original Message (ID '67073') By spice:
In Response To 'Re: DSolve with a set of equations' --------- Wow, thanks. The result is correct. Why is Mathematica not able to substitute the equations? I just want to understand how it works, because I have problems which I can't solve by hand. All the best spice