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复数——大数据之五年(2018-2022)高考真题汇编(新高考卷与全国理科)及答案

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复数——大数据之五年(2018-2022)高考真题汇编(新高考卷与全国理科)一、单选题1.已知a,b∈R,a+3i=(b+i)i(i为虚数单位),则(  )A.a=1,b=−3B.a=−1,b=3C.a=−1,b=−3D.a=1,b=32.(2+2i)(1−2i)=(  )A.−2+4iB.−2−4iC.6+2iD.6−2i3.设(1+2i)a+b=2i,其中a,b为实数,则(  )A.a=1,b=−1B.a=1,b=1C.a=−1,b=1D.a=−1,b=−14.若z=−1+3i,则zzz−1=(  )A.−1+3iB.−1−3iC.−13+33iD.−13−33i5.若z=1+i.则|iz+3z|=(  )A.45B.42C.25D.226.已知z=1−2i,且z+az+b=0,其中a,b为实数,则(  )A.a=1,b=−2B.a=−1,b=2C.a=1,b=2D.a=−1,b=−27.若复数z满足i⋅z=3−4i,则|z|=(  )A.1B.5C.7D.258.若i(1−z)=1,则z+z=(  )A.-2B.-1C.1D.29.复数2−i1−3i在复平面内对应的点所在的象限为(  )A.第一象限B.第二象限C.第三象限D.第四象限10.在复平面内,复数z满足(1−i)z=2,则z=(  )A.2+iB.2−iC.1−iD.1+i11.已知a∈R,(1+ai)i=3+i,(i为虚数单位),则a=(  )A.-1B.1C.-3D.312.设iz=4+3i,则z等于(  )A.-3-4iB.-3+4iC.3-4iD.3+4i13.已知(1−i)2z=3+2i,则z=(  )nA.-1-32iB.-1+32iC.-32+iD.-32-i14.设2(z+z)+3(z-z)=4+6i,则z=(  ).A.1-2iB.1+2iC.1+iD.1-i15.已知z=2-i,则(z(z+i)=(  )A.6-2iB.4-2iC.6+2iD.4+2i16.若z(1+i)=1−i,则z=(  )A.1–iB.1+iC.–iD.i17.复数11−3i的虚部是(  )A.−310B.−110C.110D.31018.(1–i)4=(  )A.–4B.4C.–4iD.4i19.若z=1+2i+i3,则|z|=(  )A.0B.1C.2D.220.若z=1+i,则|z2–2z|=(  )A.0B.1C.2D.221.2−i1+2i=(  )A.1B.−1C.iD.−i22.在复平面内,复数z对应的点的坐标是(1,2),则i⋅z=(  ).A.1+2iB.−2+iC.1−2iD.−2−i23.已知a∈R,若a﹣1+(a﹣2)i(i为虚数单位)是实数,则a=(  )A.1B.﹣1C.2D.﹣224.若z(1+i)=2i,则z=(  )A.-1-iB.-1+iC.1-iD.1+i25.设z=i(2+i),则z=(  )A.1+2iB.-1+2iC.1-2iD.-1-2i26.设z=-3+2i,则在复平面内z-对应的点位于(  )A.第一象限B.第二象限C.第三象限D.第四象限27.已知复数z=2+i,则z·z-=(  )A.3B.5C.3D.5n28.设z=3−i1+2i,则|z|=(  )A.2B.3C.2D.129.设复数z满足|z−i|=1,z在复平面内对应的点为(x,y),则(  )A.(x+1)2+y2=1B.(x−1)2+y2=1C.x2+(y−1)2=1D.x2+(y+1)2=130.设z=1−i1+i+2i,则|z|=(  )A.0B.12C.1D.231.复数21−i(i为虚数单位)的共轭复数是(  )A.1+iB.1−iC.−1+iD.−1−i32.i(2+3i)=(  )A.3-2iB.3+2iC.-3-2iD.-3+2i33.1+2i1−2i=(  )A.−45−35iB.−45+35iC.−35−45iD.−35+45i34.(1+i)(2−i)=(  )A.-3-iB.-3+iC.3-iD.3+i35.在复平面内,复数11−i的共轭复数对应的点位于(  )A.第一象限B.第二象限C.第三象限D.第四象限二、填空题36.已知z=2+i,则z=  37.i是虚数单位,复数9+2i2+i=  .38.设复数z1,z2满足|z1|=|z2|=2,z1+z2=3+i,则|z1−z2|=  .39.i是虚数单位,复数8−i2+i=  .40.已知i是虚数单位,则复数z=(1+i)(2−i)的实部是  .41.已知复数(a+2i)(1+i)的实部为0,其中i为虚数单位,则实数a的值是  .42.设i为虚数单位,3z−i=6+5i,则|z|的值为  43.复数z=11+i(i为虚数单位),则|z|=  44.i是虚数单位,则|5−i1+i|的值为  .n45.i是虚数单位,复数6+7i1+2i=  46.若复数z满足i⋅z=1+2i,其中i是虚数单位,则z的实部为  .47.已知复数z满足(1+i)z=1−7i(i是虚数单位),则∣z∣=  。答案解析部分1.【答案】B2.【答案】D3.【答案】A4.【答案】C5.【答案】D6.【答案】A7.【答案】B8.【答案】D9.【答案】A10.【答案】D11.【答案】C12.【答案】C13.【答案】B14.【答案】C15.【答案】C16.【答案】D17.【答案】D18.【答案】A19.【答案】C20.【答案】D21.【答案】D22.【答案】B23.【答案】C24.【答案】D25.【答案】D26.【答案】Cn27.【答案】D28.【答案】C29.【答案】C30.【答案】C31.【答案】B32.【答案】D33.【答案】D34.【答案】D35.【答案】D36.【答案】2-i37.【答案】4-i38.【答案】2339.【答案】3-2i40.【答案】341.【答案】242.【答案】2243.【答案】2244.【答案】1345.【答案】4−i46.【答案】247.【答案】5

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