0.58    

  −1.73         

 3.73

0.58            

−0.27           

 −1.73

0.58            

 −0.27        

3.73

y=tan(x)            

y=tan(3x/2) 

 tan(x+30°)

-1    

 0      

2.41

-1                 

  0 

2.41

y=tan(x)                    

y=tan(3x/2)   

 tan(x+30°)

-1                

 0       

  2.41

y=tan(x)              

 y=tan(2x)     

   tan(x+30°)

0.58            

−0.27          

 3.73