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15-10-2020
Mathematics

contestada

Simplify. i3 A) 1 B) -1 C) i D) -i E) -3i

Respuesta :

15-10-2020

Answer:

[tex]\huge\boxed{D)\ -i}[/tex]

Step-by-step explanation:

We know:

[tex]i=\sqrt{-1}\to i^2=-1[/tex]

therefore

[tex]i^3=i\cdot i\cdot i=i^2\cdot i=-1\cdot i=-i[/tex]

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