For the differentiable function f: R -{0} → R, let 3 f(x)+2 f(1/x)=1/x-10, then |f(3)+f^′(1/4)| is equal to

For the differentiable function $\displaystyle f: \mathbb{R}-\{0\} \rightarrow \mathbb{R}$, let $\displaystyle 3 f(x)+2 f\left(\frac{1}{x}\right)=\frac{1}{x}-10$, then $\displaystyle \left|f(3)+f^{\prime}\left(\frac{1}{4}\right)\right|$ is equal to