Show that \text { 1. } \frac{(n+1)^{2}-n^{2}}{n} \rightarrow 2 \text { . (Do not use ULT.) } \text { 2. } \frac{n^{2}+n}{n^{3}+1} \rightarrow 0 . \text { (Do not use

ULT.) } \text { 3. } \sqrt[n]{a} \rightarrow 1 \text { for } a \geq 1 \text { . (Look at the examples we did; Squeeze Principle) }