Consider the following transformation az + b w = A= ad – bc # 0 cz + d' a) Show that the map can be inverted to find a unique (single valued) z as a function of w everywhere. b) Verify that the mapping can be considered as the result of three successive maps: a z' = cz + d, z" = 1/z', z" + %3| W = - where c + 0 and is of the form b w = d when c = : 0.

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9. Consider the following transformation
az + b
A= ad – bc # 0
W =
cz + d'
(a) Show that the map can be inverted to find a unique (single valued) z as a function of w
everywhere.
(b) Verify that the mapping can be considered as the result of three successive maps:
z" = 1/z',
-2" +:
а
z' = cz + d,
W =
C
C
where c + 0 and is of the form
а
b
W =
d
d
when c = 0.
Transcribed Image Text:9. Consider the following transformation az + b A= ad – bc # 0 W = cz + d' (a) Show that the map can be inverted to find a unique (single valued) z as a function of w everywhere. (b) Verify that the mapping can be considered as the result of three successive maps: z" = 1/z', -2" +: а z' = cz + d, W = C C where c + 0 and is of the form а b W = d d when c = 0.
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