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9. Roots, Radicals, and Complex Numbers - 2! 2부

9. Roots, Radicals, and Complex Numbers / Introduction to Complex Numbers / 문제 1

문제 1

What are the real and imaginary parts of the complex number $5 i$ ?

A

Real: $5$

Imaginary: $5$

B

Real: $5$

Imaginary: $0$

C

Real: $0$

Imaginary: $5$

D

Real: $0$

Imaginary: $negative 5$