Solve these pairs of simultaneous euations.2z+3w=20-7i
iz-2w=-6+6iThe ans is:
z=4-2i
w=4-i show workings
EASY MATHS (QUICK)
2010-10-25 12:43 am
回答 (1)
2010-10-25 1:12 am
✔ 最佳答案
Solve these pairs of simultaneous euations. 2z+3w=20－7i
iz－2w=－6+6i
Sol
2(2z+3w)+3(iz－2w)=2(20－7i)+3(－6+6i)
(4+3i)z=22+4i
z=(22+4i)/(4+3i)
=(22+4i)(4－3i)/[(4+3i)(4－3i)]
=(88－66i+16i+12)/(16+9)
=(100－50i)/25
=4－2i
3w=20－7i－2(4－2i)
=20－7i－8+4i
=12－3i
w=4－i
收錄日期: 2021-04-23 20:58:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101024000051KK01000