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Câu 5:

Cho số phức sau $z = 1 - 2i$

Câu 5: Cho số phức sau z=1−2iz = 1 - 2iz=1−2i. Tìm phần ảo của số phức zzz.

Thông tin câu hỏi

Câu 5:

Cho số phức sau $z = 1 - 2i$ . Tìm phần ảo của số phức $z$ .