The poser of a puzzle gets to set the terms, and the OP is pretty clear that this is meant to be wide open.
The poser of the problem is just passing along an already established puzzle that
has 0 through 9 for the goals, but it has been meddled with by adding in a goal of
10 that does not belong in the original puzzle.
This has the set format as I already explained, else you would just announce you
have three digits/numbers (here there are three 3s), and you would get to place
them in any orientation with any "operations."
Ultimately, the way this one was stated, we need to decide what counts as an "operation". I consider the use of decimals as potentially illegal, and avoided that until I saw no other way; and the use of a vinculum in a decimal is truly questionable, which is why I didn't post an answer until I had an alternative to that -- but I did post it, because I like it! I question whether the derivative should count, because it operates on a function, not on a number.
And if we can't have fun in a puzzle, why do it at all?
If it were a good/challenging puzzle, it would have stopped at the goal of 9. Then,
it could have excluded the decimal points. I also would have not allowed the use
of the derivative. However, 3 is a constant function, so its derivative is 0.
And I'll throw back to you, if we can't have some consistent guidelines and not too
open rules for these numerical puzzles, why do them at all!?