Example 10.13.  Show that the transformation  [Graphics:Images/MapTrigonometricFunMod_gr_39.gif]  is a one-to-one conformal mapping of the vertical  strip  [Graphics:Images/MapTrigonometricFunMod_gr_40.gif]  onto the w-plane slit along the rays  [Graphics:Images/MapTrigonometricFunMod_gr_41.gif]  and  [Graphics:Images/MapTrigonometricFunMod_gr_42.gif].  

Figure 10.17  The transformation  [Graphics:Images/MapTrigonometricFunMod_gr_61.gif].

Explore Solution 10.13.

Enter the function  f(z) = sin(z).  

[Graphics:../Images/MapTrigonometricFunMod_gr_77.gif]


[Graphics:../Images/MapTrigonometricFunMod_gr_78.gif]

 

 

The image is traced using a graph.

[Graphics:../Images/MapTrigonometricFunMod_gr_79.gif]





[Graphics:../Images/MapTrigonometricFunMod_gr_80.gif]

[Graphics:../Images/MapTrigonometricFunMod_gr_81.gif]

[Graphics:../Images/MapTrigonometricFunMod_gr_82.gif]

[Graphics:../Images/MapTrigonometricFunMod_gr_83.gif]

We see that the transformation  w  =  f(z) = sin(z)  maps the vertical  strip  [Graphics:../Images/MapTrigonometricFunMod_gr_84.gif]  onto the w-plane slit along the rays  [Graphics:../Images/MapTrigonometricFunMod_gr_85.gif].  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(c) 2006 John H. Mathews, Russell W. Howell