Mathematics
Senior High
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−5iの答えが5になるんですけどどうしてですか?
[クリアー数学Ⅱ 問題79]
次の複素数と共役な複素数をいえ。 また, 共役な複素
数との和, 積を求めよ。
(1)5+i
(3)√3
1-√5i
(2)
2
(4)-5i
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虚部の符号の逆なのですね‼︎‼︎ありがとうございます🙏🙏