Question

f(x)=2xlnx solve for x

Answer 1

There is nothing to solve. If the equation is rewritten as \[y=2x \ln x\]then we could solve for x in terms of y.

Answer 2

make X the subject of the formular

Answer 3

Hello all !
f(x) is the dependent variable here, which is equal to 2xlnx, where x is independent.
@Stacey wrote "y=2xlnx". She defined a new variable, which is again equal to 2xlnx. Hence, we can write f(x)=y=2xlnx. Now answering the main question by @adarakch:

f(x)=2xlnx solve for x

First of all, the question is incomplete @adarakch.
This is only an equation with 1 dependent "f(x)" and 1 independent "x" variable.

It would probably be: Differentiate f(x) or Integrate f(x) for a given condition f '(x)=0 or something!