Difference between fsolve and nSolve? [CAS]

[mandresve]

Hi to everyone...

Recently I had a conflict understanding the fsolve and nSolve functions in my Prime.

I wonder what is the difference between them? in the catalog's description, the explanation for both functions appears exactly the same. When I solve a function for x (or whatever numeric constant/var), sometimes it works better with nSolve than fsolve, of course, entering the required parameters for each command to its solution.

I will be very grateful if someone give me examples of cases in which I can or cannot use fsolve and in which types of equations is best to use nSolve.

Thank you very much.

Edit:
If I specify the range of solution that I hope to get (within the fsolve command) I finally get the same response that gives me nSolve, for example using the range 0 to infinity. What is the idea of having two commands? Isn't supposed that if I miss optional fsolve arguments the command must evaluate the expression in any interval? (obviously the guess/interval and the solution method are optional within fsolve). According to my understanding, XCAS documentation shows that fsolve and nSolve commands do exactly the same.