a+bi 係点計，how to find a?
回答 (1)
2017-01-14 9:08 am
Sol
z=(a+5)i^6+(a－3)i^7
=(a+3)*(－1)+(a－3)*(－i)
=(－a－3)+(3－a)i
3－a=0
a=3
z=－8
z=(a+5)i^6+(a－3)i^7
=(a+3)*(－1)+(a－3)*(－i)
=(－a－3)+(3－a)i
3－a=0
a=3
z=－8
收錄日期: 2021-04-18 16:02:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170113150613AAkUwBN