Assume that $\underset{\theta \to -1}{\lim }f\left(\theta \right)$ exists and $\frac{{\theta }^2+\theta -2}{\theta +3}\le \frac{f\left(\theta \right)}{{\theta }^2}\le \frac{{\theta }^2+2\theta -1}{\theta +3}$ holds for a certain interval containing the point, $\theta =-1$ then $\underset{\theta \to -1}{\lim }f\left(\theta \right)$: