Question: Trying to Integrate a functional derivative under the Physics packages (the brachistochrone problem)

After loading the Physics package, I have define the langragian L this way:


After some algebra, I get the following integral:

((1+(y'(x))^2)^(-1)*1/y(x) = C

At that stage, I would like to isolate the term y'(x) and do the change of variable. But since I am under the Physics package, I try to isolate it with no succes and worst if I try to change the variable first. A little help would be appreciate.

Thank you in advance


Maple 2022 under Windows

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