1. We are asked to find the value of the function $F$ at $x = -\frac{1}{2}$. However, the function $F(x)$ is not given in the problem statement. 2. To evaluate $F\left(-\frac{1}{2}\right)$, we need the explicit formula or expression for $F(x)$. 3. Please provide the function $F(x)$ so we can substitute $x = -\frac{1}{2}$ and calculate the value. Since the function is missing, we cannot proceed further.