If `f(x) = int(2sinx-sin2x)/(x^(3))`dx, where `xne0`, then `Limit_(xto0) f^(')(x)` has the value

Explanation

To solve the problem, we need to find the limit of the derivative of the function \( f(x) = \int \frac{2 \sin x - \sin 2x}{x^3} \, dx \) as \( x \) approaches 0.

### Step-by-Step Solution:

1. **Define the Function**:
\[ f(x) = \int \frac{2 \sin x - \sin 2x}{x^3} \, dx \]
...