A function f(x)f(x)f(x) is defined on R∖{0}\mathbb{R} \setminus \{0\}R∖{0} such that f(x)+4f(1x)=3xf(x) + 4f(\frac{1}{x}) = 3xf(x)+4f(x1)=3x. What is the value of f(2)f(2)f(2)?
−1-1−1
111
0.50.50.5
−0.5-0.5−0.5