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The example given is way too simple! I mean: it's just separable first order ODE. Can we cook up some examples that are more "interesting", for instance a 2nd order ode which is not readily tractable by other techniques? —Preceding unsigned comment added by 76.11.126.8 (talk) 19:47, 4 April 2010 (UTC)[reply]

My goal was not to give examples beyond understanding but to show simply an infinitesimal approach that leads to Lie symmetries. But why not to add also a more complicated example? you are right. I will think of such an example but if you have some suggestions, they are more than welcome. Baub (talk) 22:45, 8 April 2010 (UTC)[reply]

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