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aprendendo a fazer provas de 2a fase de matemática (fuvest)
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*1 Tópicos teóricos abordados*
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*2 Enunciado*
Considere a equação z² = αz + ( α – 1) z*, onde α é um número real e z* indica
o conjugado do número complexo z.
a) Determinar os valores de α para os quais a equação tem quatro raízes
distintas.
b) Representar no plano complexo, as raízes dessa equação quando α = 0.
Um triângulo ABC tem lados de comprimentos AB = 5, BC = 4 e AC = 2. Sejam M e N
os pontos de AB tais que CM é a bissetriz relativa ao ângulo ACB e CN é a altura
relativa ao lado AB. Determinar o comprimento de MN.
Nos itens abaixo, z denota um número complexo e i a unidade imaginária
i² = –1. Suponha z ≠ i.
a) Para quais valores de z tem-se ( z + i ) ÷ ( 1 + iz ) = 2?
b) Determine o conjunto de todos os valores de z para os quais
( z + i ) ÷ ( 1 + iz ) é um número real.
_Caso você tenha resolvido o problema por um caminho alternativo, não deixe de comentá-lo para assim enriquecermos a discussão_
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*3 Sugestão de problemas*
Envie uma sugestão de problema e eu a resolverei em vídeo – https://bit.ly/QED_forms
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*4 Equipamentos utilizados*
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*5 Livros sobre finanças*
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5.2 Luiz Barsi Filho: https://amzn.to/3ndbYLo
5.3 Ludwig von Mises: https://amzn.to/3OE5jVe
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*Informações do vídeo*
*Música* –
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