Moderate# Continuity of Piecewise Cosine Functions

APCALC-0NB5QF

Discuss the continuity of:

$$f(x)=\begin{Bmatrix} \cos(x)\quad & x<-\pi \\\ |\cos(x)| & -\pi \le x\le \frac { \pi }{ 2 } \\\ { \cos }^{ 2 }(x) & x>\frac { \pi }{ 2 } \end{Bmatrix}$$