Numeros Complexos Flashcards

1
Q

Seno e cosseno

A

Sen = b/|z| Cos = a/|z|

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2
Q

Forma trigonométrica ou polar

A

z=|z|(cosØ + isenØ)

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3
Q

Multiplicação de C na forma trigonométrica

A

z1.z2=|z1|.|z2|[cos(Ø1 + Ø2) + isen(Ø1 + Ø2)]

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4
Q

1a fórmula de moivre

A

zⁿ = |z|ⁿ[cos(nØ) + isen(nØ)]

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5
Q

Divisão de C na forma trigonométrica

A

z1/z2=|z1|/|z2|[cos(Ø1 - Ø2) + isen(Ø1 - Ø2)]

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6
Q

Multiplicação de números complexos em par ordenado

A

(ac-bd; ad+bc)

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7
Q

(1 + i)²

A

2i

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8
Q

(1 - i)²

A

-2i

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9
Q

Como encontrar um afixo 90 grau anti-horário a outro afixo?

A

multiplicar por i

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10
Q

Considere o número complexo z = 2 + 2i. Dessa forma, z^100

A

um número negativo

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