I seem to be quite stuck on figuring out how to leave certain letters (e.g. planck's constant h) inside the equation without having to assign it as some particular number.
What I am trying to do is find the value of a when the following equation is at a minimum:
E = (a*(h^2)/2m) + 0.3989422804/sqrt(a)
Here h and m are what I want to set as constants without actually setting them to h := 1 because I want a in terms of h and m. I have already found the derivative dE/da:
((h^2)/2m) - 0.1994711402/a^(3/2)
But I cannot use fsolve to find the value of a at the minimum because it keeps saying that h and m are variables and unsolved for.
Any help would be greatly appreciated.