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Locus and Complex Numbers
Locus and Complex Numbers
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Locus and Complex Numbers
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Locus and Complex Numbers
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            x
Locus and Complex Numbers
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  Im z   c
Locus and Complex Numbers
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                    x       x

  Im z   c
Locus and Complex Numbers
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                    x   k       x

  Im z   c
Locus and Complex Numbers
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                    x   k                 x

  Im z   c                   Re z   k
Locus and Complex Numbers
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                        x       k                 x

  Im z   c                           Re z   k
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Locus and Complex Numbers
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                        x       k                 x

  Im z   c                           Re z   k
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Locus and Complex Numbers
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                             x            k                 x

  Im z   c                                     Re z   k
                         y
                    1


                                      x
                                 2
Locus and Complex Numbers
Lines           y                                 y
                c



                             x               k                        x

  Im z   c                                               Re z   k
                         y
                    1

                                          z  1  z  2
                                      x
                                 2
e.g . z  1  i  z  2  i
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
 OR  bisector of 1,1 and  2,1
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
OR  bisector of 1,1 and  2,1
M 1  2 ,1  1
                 
      2      2 
     1 
    ,0 
     2 
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
OR  bisector of 1,1 and  2,1
M 1  2 ,1  1               11
                           m
      2      2                 1 2
     1                      
                                 2
    ,0 
     2                         3
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
OR  bisector of 1,1 and  2,1
M 1  2 ,1  1               11
                           m
      2      2                 1 2
     1                      
                                 2                                      3
    ,0                                        required slope is 
     2                         3                                      2
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
       6x  4 y  3  0
OR  bisector of 1,1 and  2,1
M 1  2 ,1  1               11
                           m
      2      2                 1 2
     1                      
                                 2                                      3
    ,0                                        required slope is 
     2                         3                                      2
                        3  1
                 y0   x 
                        2  2
e.g . z  1  i  z  2  i
 x  12   y  12   x  22   y  12
 x2  2x 1  y2  2 y 1  x2  4x  4  y 2  2 y 1
       6x  4 y  3  0
OR  bisector of 1,1 and  2,1
M 1  2 ,1  1               11
                           m
      2      2                 1 2
     1                      
                                 2                                      3
    ,0                                        required slope is 
     2                         3                                      2
                          3     1
               y0   x 
                          2     2
                               3
                  2 y  3 x 
                               2
         6x  4 y  3  0
ii  Sketch z  2i  z  4i
ii  Sketch z  2i  z  4i   y




                                   x
ii  Sketch z  2i  z  4i    y
                               4


                                    x
                               -2
ii  Sketch z  2i  z  4i    y
                               4
                                1
                                    x
                               -2
ii  Sketch z  2i  z  4i    y
                               4
                                1
                                    x
                               -2
ii  Sketch z  2i  z  4i    y
                               4
                                1
                                    x
                               -2

 Rays
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                        x
                                   -2

 Rays

                y




                               x
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                        x
                                   -2

 Rays

                y



                     
                               x
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                        x
                                   -2

 Rays

                y



                     
                               x
    arg z  
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                            x
                                   -2

 Rays

                y                       y



                     
                               x                x
    arg z  
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                                x
                                   -2

 Rays

                y                       y
                                                
                                            
                     
                               x                    x
    arg z  
ii  Sketch z  2i  z  4i        y
                                   4
                                    1
                                                 x
                                   -2

 Rays

                y                       y
                                                  
                                            
                     
                               x                        x
    arg z                                 arg z     

e.g. z  1 and 0  arg z 
                             4

e.g. z  1 and 0  arg z 
                             4
             y




                                 x

e.g. z  1 and 0  arg z 
                             4
             y
             1
   z 1


   -1                    1       x


             -1

e.g. z  1 and 0  arg z 
                             4
             y                         
             1               arg z 
   z 1                                4
                    
                     4
   -1                    1 x


             -1

e.g. z  1 and 0  arg z 
                             4
             y                         
             1               arg z 
   z 1                                4
                    
                     4
   -1                    1       x     arg z  0


             -1

e.g. z  1 and 0  arg z 
                             4
             y                         
             1               arg z 
   z 1                                4
                    
                     4
   -1                    1       x     arg z  0


             -1

e.g. z  1 and 0  arg z 
                             4
             y                         
             1               arg z 
   z 1                                4
                    
                     4
   -1                    1       x     arg z  0


             -1

e.g. z  1 and 0  arg z 
                             4
             y                         
             1               arg z 
   z 1                                4
                    
                     4
   -1                    1        x    arg z  0


             -1


                                 Exercise 4N; 1a to j, 2ace, 3ace etc, 4ace

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11 x1 t16 07 approximations (2013)11 x1 t16 07 approximations (2013)
11 x1 t16 07 approximations (2013)
 
11 x1 t16 06 derivative times function (2013)
11 x1 t16 06 derivative times function (2013)11 x1 t16 06 derivative times function (2013)
11 x1 t16 06 derivative times function (2013)
 
11 x1 t16 05 volumes (2013)
11 x1 t16 05 volumes (2013)11 x1 t16 05 volumes (2013)
11 x1 t16 05 volumes (2013)
 
11 x1 t16 04 areas (2013)
11 x1 t16 04 areas (2013)11 x1 t16 04 areas (2013)
11 x1 t16 04 areas (2013)
 
11 x1 t16 03 indefinite integral (2013)
11 x1 t16 03 indefinite integral (2013)11 x1 t16 03 indefinite integral (2013)
11 x1 t16 03 indefinite integral (2013)
 
11 x1 t16 02 definite integral (2013)
11 x1 t16 02 definite integral (2013)11 x1 t16 02 definite integral (2013)
11 x1 t16 02 definite integral (2013)
 
11 x1 t16 01 area under curve (2013)
11 x1 t16 01 area under curve (2013)11 x1 t16 01 area under curve (2013)
11 x1 t16 01 area under curve (2013)
 

X2 T01 11 locus & complex numbers 2

  • 2. Locus and Complex Numbers Lines
  • 3. Locus and Complex Numbers Lines y x
  • 4. Locus and Complex Numbers Lines y c x
  • 5. Locus and Complex Numbers Lines y c x Im z   c
  • 6. Locus and Complex Numbers Lines y y c x x Im z   c
  • 7. Locus and Complex Numbers Lines y y c x k x Im z   c
  • 8. Locus and Complex Numbers Lines y y c x k x Im z   c Re z   k
  • 9. Locus and Complex Numbers Lines y y c x k x Im z   c Re z   k y x
  • 10. Locus and Complex Numbers Lines y y c x k x Im z   c Re z   k y x
  • 11. Locus and Complex Numbers Lines y y c x k x Im z   c Re z   k y 1 x 2
  • 12. Locus and Complex Numbers Lines y y c x k x Im z   c Re z   k y 1 z  1  z  2 x 2
  • 13. e.g . z  1  i  z  2  i
  • 14. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12
  • 15. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1
  • 16. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0
  • 17. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1
  • 18. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1 M 1  2 ,1  1   2 2   1    ,0   2 
  • 19. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1 M 1  2 ,1  1 11  m  2 2  1 2  1   2   ,0   2  3
  • 20. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1 M 1  2 ,1  1 11  m  2 2  1 2  1   2 3   ,0   required slope is   2  3 2
  • 21. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1 y2  2 y 1  x2  4x  4  y2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1 M 1  2 ,1  1 11  m  2 2  1 2  1   2 3   ,0   required slope is   2  3 2 3 1 y0   x  2 2
  • 22. e.g . z  1  i  z  2  i  x  12   y  12   x  22   y  12 x2  2x 1  y2  2 y 1  x2  4x  4  y 2  2 y 1 6x  4 y  3  0 OR  bisector of 1,1 and  2,1 M 1  2 ,1  1 11  m  2 2  1 2  1   2 3   ,0   required slope is   2  3 2 3 1 y0   x  2 2 3 2 y  3 x  2 6x  4 y  3  0
  • 23. ii  Sketch z  2i  z  4i
  • 24. ii  Sketch z  2i  z  4i y x
  • 25. ii  Sketch z  2i  z  4i y 4 x -2
  • 26. ii  Sketch z  2i  z  4i y 4 1 x -2
  • 27. ii  Sketch z  2i  z  4i y 4 1 x -2
  • 28. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays
  • 29. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y x
  • 30. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y  x
  • 31. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y  x arg z  
  • 32. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y y  x x arg z  
  • 33. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y y    x x arg z  
  • 34. ii  Sketch z  2i  z  4i y 4 1 x -2 Rays y y    x x arg z   arg z     
  • 35.  e.g. z  1 and 0  arg z  4
  • 36.  e.g. z  1 and 0  arg z  4 y x
  • 37.  e.g. z  1 and 0  arg z  4 y 1 z 1 -1 1 x -1
  • 38.  e.g. z  1 and 0  arg z  4 y  1 arg z  z 1 4  4 -1 1 x -1
  • 39.  e.g. z  1 and 0  arg z  4 y  1 arg z  z 1 4  4 -1 1 x arg z  0 -1
  • 40.  e.g. z  1 and 0  arg z  4 y  1 arg z  z 1 4  4 -1 1 x arg z  0 -1
  • 41.  e.g. z  1 and 0  arg z  4 y  1 arg z  z 1 4  4 -1 1 x arg z  0 -1
  • 42.  e.g. z  1 and 0  arg z  4 y  1 arg z  z 1 4  4 -1 1 x arg z  0 -1 Exercise 4N; 1a to j, 2ace, 3ace etc, 4ace