Math Problem Statement
Sea 𝑧 = −1+𝑖/ √2 . Demostrar que 𝑧 ^4 = −1.
Solution
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Polar Form
De Moivre's Theorem
Trigonometry
Formulas
Modulus of a complex number: |z| = √(Re(z)^2 + Im(z)^2)
Argument of a complex number: θ = tan^(-1)(Im(z)/Re(z))
De Moivre's Theorem: z^n = r^n (cos(nθ) + i sin(nθ))
Theorems
De Moivre's Theorem
Trigonometric Identities
Suitable Grade Level
Undergraduate Level (Calculus or Advanced Pre-Calculus)