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复数求值,1.(2-3i)(4+i)2.(2+√3i)∧2.3.(3-5i)∧2.4.(1+3i)(1-3i)5.1+i/i6.(7-i)/3-4i
题目详情
复数求值,
1.(2-3i)(4+i) 2.(2+√3i)∧2.3.(3-5i)∧2.4.(1+3i)(1-3i) 5.1+i/i 6.(7-i)/3-4i
1.(2-3i)(4+i) 2.(2+√3i)∧2.3.(3-5i)∧2.4.(1+3i)(1-3i) 5.1+i/i 6.(7-i)/3-4i
▼优质解答
答案和解析
1 8-12i+2i-3i^2
=8-10i+3
=11-10i
2 原式 4+4√3i-√3
3 9-30i+25i^2
=9-30i-25
=-30i-16
4 1-9i^2
=1+9
=10
5 (1+i)/i
=i(1+i)/i^2
=-i(1+i)
=-i-i^2
=-i+1
6 （7-i)/(3+4i)
=(7-i)(3-4i)/(3+4i)(3-4i)
=(25+25i)/25
=1+i
=8-10i+3
=11-10i
2 原式 4+4√3i-√3
3 9-30i+25i^2
=9-30i-25
=-30i-16
4 1-9i^2
=1+9
=10
5 (1+i)/i
=i(1+i)/i^2
=-i(1+i)
=-i-i^2
=-i+1
6 （7-i)/(3+4i)
=(7-i)(3-4i)/(3+4i)(3-4i)
=(25+25i)/25
=1+i
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