F(x)=\begin{cases}x^2-1 & \text{ for }\hspace{10px} x<0 \\ -4 & \text{ for }\hspace{10px} x=0 \\ \frac{3}{2}x+1 & \text{ for }\hspace{10px} 0< x \leq 4\end{cases} f(x)= ⎩ ⎪ ⎨ ⎪ ⎧ x 2 −1 −4 2 3 x+1 for x<0 for x=0 for 0