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SHEYI3
@SHEYI3
January 2021
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J' ai fini mon dm de maths mais dans cet exo, la question 4 je bloque ><, le reste j'ai fait. Juste la question 4, j'ai testé plusieurs fois en vain et j'aimerais savoir ce que vous pourriez me conseiller.
Merci
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scoladan
Verified answer
Bonjour,
Z = (z' - 1)/(z - 1)
= [(1 - z - zbarre + 1)/(zbarre - 1)]/(z - 1)
= [(2 - x - iy - x + iy)/x - iy - 1)]/(x + iy - 1)
= (2 - 2x)/(x - 1- iy)(x - 1 + iy)
= 2(1 - x)/[(x - 1)² + y²]
donc Z ∈ R
1 votes
Thanks 1
SHEYI3
Merci je vais tester ça de suite pour mieux comprendre
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Lista de comentários
Verified answer
Bonjour,Z = (z' - 1)/(z - 1)
= [(1 - z - zbarre + 1)/(zbarre - 1)]/(z - 1)
= [(2 - x - iy - x + iy)/x - iy - 1)]/(x + iy - 1)
= (2 - 2x)/(x - 1- iy)(x - 1 + iy)
= 2(1 - x)/[(x - 1)² + y²]
donc Z ∈ R