Question
If $f(x) = \begin{vmatrix} \frac{\sin x}{x^3} & \frac{\cos x}{x^2} & \frac{\tan x}{2x} \\ x^2 & 1 & x \\ 1 & x & x^2 \end{vmatrix}$, then $\lim_{x \to 0} \frac{f(x)}{x^2} =$
If $f(x) = \begin{vmatrix} \frac{\sin x}{x^3} & \frac{\cos x}{x^2} & \frac{\tan x}{2x} \\ x^2 & 1 & x \\ 1 & x & x^2 \end{vmatrix}$, then $\lim_{x \to 0} \frac{f(x)}{x^2} =$