Question: difforder


Assume I have an eqn:=diff(x(t),t)+diff(y(t),t,t)+x(t)=0(It is just an example) for example, how can I find in which order variables are apearing here in this eqns?

for example I can give this eqn and result for x would be 1 and for y would be 2.

What is Maple command for that?

Thanks in advance,




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