Hi,
Le lundi 24 février 2025 à 17:39:30 UTC+1, bernd.bre...@gmail.com a écrit :
So how should i define H in 'In [2]', so that 'In [4]' shows the
expected result.
Basically you should define H as a symbolic expression, not a function, and
make a distinction between functions and symbolic
Complement : Sage’s notation for derivatives is somewhat baroque, and this
does not help in the present case.
Here, both k and x are functions of t ; writing h as a function of x and k
is just an intricate way to write a function of t, unique independent
variable.
As for notations : what we’
