( 0 , 1)

( 1/6 π , 1 )

( 1/4 π , - 1 )

( 1/3 π , 1 )

( 1/2 π , - 1 )

 $30\degree<x<90\degree\$  

 $0\degree\le x<30\degree\$  

 $150\degree<x<210\degree$  

 $270\degree<x<330\degree$  

 $180\degree<x\le360\degree$  

 $0\degree<x<180\degree$  

 $0\degree\le x<180\degree$  

 $180\degree<x<360\degree$  

$f\left(x\right)>0$

$f'\left(x\right)<0$

$f\left(x\right)<0$

$f'\left(x\right)>0$

 $f'\left(x\right)=0$  

turun, tetap, naik, tetap

naik, turun, tetap

naik, tetap, naik, tetap

naik, tetap, turun, tetap

 $\lceil135,\ 2\rceil\ dan\ \lceil315,2\rceil$  

 $\lceil135,1\rceil\ dan\ \lceil315,1\rceil$  

 $\lceil45,1\rceil\ dan\ \lceil225,1\rceil$  

 $\lceil45,2\rceil\ dan\ \lceil225,2\rceil$  

 $\lceil45,2\rceil\ dan\ \lceil135,2\rceil$