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when toggle format what by license comment
Apr 24, 2021 at 12:10 vote accept CommunityBot
Mar 5, 2021 at 12:08 comment added Himanshu Yes! I can understand. OP didn't specify the problem, It has just given Langrangian and you can not interpret anything from that. Except for what @AFG has done.
Mar 5, 2021 at 11:50 comment added my2cts You are making assumptions. Reasonable assumptions , but still. We don't know that $\phi$ is even an angle. All symbols in the question are undefined.
Mar 5, 2021 at 10:43 history answered Himanshu CC BY-SA 4.0