13. Solve the following

A function $f : [(-3, 7) \rightarrow R$ is defined as follows:

 

$f(x) = \begin{cases} 4x^2 - 1 & \text{ if } x= -3 \leq x < 2\\ 3x - 2 & \text{ if } x= 2 \leq x \leq 4\\ 2x - 3 & \text{ if } x= 4 < x < 7 \end{cases}$

 

Find the following:

 

$f($−3$)$ $-$ $f($2$)$ $=$

 

$\frac{f(2) - f(-3)}{2f(5) - f(-3)}$ $=$ $\frac{i}{i}$

 

[Note: Do not reduce the obtained fraction.]