解答
化简 (1+i)29
解答
−16384−16384i
求解步骤
(1+i)29
使用二项式定理: (a+b)n=i=0∑n(in)a(n−i)bia=1,b=i
=i=0∑29(i29)⋅1(29−i)ii
展开求和
=0!(29−0)!29!⋅129i0+1!(29−1)!29!⋅128i1+2!(29−2)!29!⋅127i2+3!(29−3)!29!⋅126i3+4!(29−4)!29!⋅125i4+5!(29−5)!29!⋅124i5+6!(29−6)!29!⋅123i6+7!(29−7)!29!⋅122i7+8!(29−8)!29!⋅121i8+9!(29−9)!29!⋅120i9+10!(29−10)!29!⋅119i10+11!(29−11)!29!⋅118i11+12!(29−12)!29!⋅117i12+13!(29−13)!29!⋅116i13+14!(29−14)!29!⋅115i14+15!(29−15)!29!⋅114i15+16!(29−16)!29!⋅113i16+17!(29−17)!29!⋅112i17+18!(29−18)!29!⋅111i18+19!(29−19)!29!⋅110i19+20!(29−20)!29!⋅19i20+21!(29−21)!29!⋅18i21+22!(29−22)!29!⋅17i22+23!(29−23)!29!⋅16i23+24!(29−24)!29!⋅15i24+25!(29−25)!29!⋅14i25+26!(29−26)!29!⋅13i26+27!(29−27)!29!⋅12i27+28!(29−28)!29!⋅11i28+29!(29−29)!29!⋅10i29
化简 0!(29−0)!29!⋅129i0:1
化简 1!(29−1)!29!⋅128i1:29i
化简 2!(29−2)!29!⋅127i2:406i2
化简 3!(29−3)!29!⋅126i3:3654i3
化简 4!(29−4)!29!⋅125i4:23751i4
化简 5!(29−5)!29!⋅124i5:118755i5
化简 6!(29−6)!29!⋅123i6:475020i6
化简 7!(29−7)!29!⋅122i7:1560780i7
化简 8!(29−8)!29!⋅121i8:4292145i8
化简 9!(29−9)!29!⋅120i9:10015005i9
化简 10!(29−10)!29!⋅119i10:20030010i10
化简 11!(29−11)!29!⋅118i11:34597290i11
化简 12!(29−12)!29!⋅117i12:51895935i12
化简 13!(29−13)!29!⋅116i13:67863915i13
化简 14!(29−14)!29!⋅115i14:77558760i14
化简 15!(29−15)!29!⋅114i15:77558760i15
化简 16!(29−16)!29!⋅113i16:67863915i16
化简 17!(29−17)!29!⋅112i17:51895935i17
化简 18!(29−18)!29!⋅111i18:34597290i18
化简 19!(29−19)!29!⋅110i19:20030010i19
化简 20!(29−20)!29!⋅19i20:10015005i20
化简 21!(29−21)!29!⋅18i21:4292145i21
化简 22!(29−22)!29!⋅17i22:1560780i22
化简 23!(29−23)!29!⋅16i23:475020i23
化简 24!(29−24)!29!⋅15i24:118755i24
化简 25!(29−25)!29!⋅14i25:23751i25
化简 26!(29−26)!29!⋅13i26:3654i26
化简 27!(29−27)!29!⋅12i27:406i27
化简 28!(29−28)!29!⋅11i28:29i28
化简 29!(29−29)!29!⋅10i29:i29
=1+29i+406i2+3654i3+23751i4+118755i5+475020i6+1560780i7+4292145i8+10015005i9+20030010i10+34597290i11+51895935i12+67863915i13+77558760i14+77558760i15+67863915i16+51895935i17+34597290i18+20030010i19+10015005i20+4292145i21+1560780i22+475020i23+118755i24+23751i25+3654i26+406i27+29i28+i29
化简 1+29i+406i2+3654i3+23751i4+118755i5+475020i6+1560780i7+4292145i8+10015005i9+20030010i10+34597290i11+51895935i12+67863915i13+77558760i14+77558760i15+67863915i16+51895935i17+34597290i18+20030010i19+10015005i20+4292145i21+1560780i22+475020i23+118755i24+23751i25+3654i26+406i27+29i28+i29:−16384i−16384
=−16384i−16384
Rewrite in standard complex form: −16384−16384i
=−16384−16384i