Question 14
As we approaching from the negative side,
.
So, we have
![\lim_(x \to 3^(-))=(3-x)/(x-3)=(-(x-3))/(x-3)=\boxed{-1}](https://img.qammunity.org/2023/formulas/mathematics/college/4kytyjnia4y08mywtph33u8ms7mzwcbkcc.png)
and thus the limit exists at x=3.
Question 15
For the top part of the function,
![(9-9)^(2)=0](https://img.qammunity.org/2023/formulas/mathematics/college/cdejsged0zbt58xygyqnh5kcc6ttb291ox.png)
For the bottom part of the function,
![9-9=0](https://img.qammunity.org/2023/formulas/mathematics/high-school/4jolq5v0lczqu03ocphbe76v68hs21u4vg.png)
As both one-sided limits are equal, L = 0, and thus the limit exists at x=9.