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1.3復(fù)數(shù)(精練)(提升版)題組一復(fù)數(shù)的基本知識(shí)1.(2022·內(nèi)蒙古赤峰)若復(fù)數(shù)z滿足SKIPIF1<0,則(

)題組一復(fù)數(shù)的基本知識(shí)A.SKIPIF1<0B.SKIPIF1<0是純虛數(shù)C.復(fù)數(shù)z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第三象限D(zhuǎn).若復(fù)數(shù)z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在角α的終邊上,則SKIPIF1<02.(2022·廣東·二模)(多選)已知復(fù)數(shù)z的共軛復(fù)數(shù)是SKIPIF1<0,SKIPIF1<0,i是虛數(shù)單位,則下列結(jié)論正確的是(

)A.SKIPIF1<0 B.SKIPIF1<0的虛部是0C.SKIPIF1<0 D.SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第四象限3.(2022·山東濰坊·二模)(多選)若復(fù)數(shù)SKIPIF1<0,SKIPIF1<0,其中SKIPIF1<0是虛數(shù)單位,則下列說法正確的是(

)A.SKIPIF1<0B.SKIPIF1<0C.若SKIPIF1<0是純虛數(shù),那么SKIPIF1<0D.若SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的向量分別為SKIPIF1<0(SKIPIF1<0為坐標(biāo)原點(diǎn)),則SKIPIF1<04.(2022·廣東茂名·二模)(多選)已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0為實(shí)數(shù),則下列說法中正確的有(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0為純虛數(shù) D.SKIPIF1<0對(duì)應(yīng)的點(diǎn)位于第三象限5(2022·湖南湘潭·三模)(多選)已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0,則(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于第二象限6.(2022·廣東佛山·二模)(多選)關(guān)于復(fù)數(shù)SKIPIF1<0(i為虛數(shù)單位),下列說法正確的是()A.SKIPIF1<0 B.SKIPIF1<0在復(fù)平面上對(duì)應(yīng)的點(diǎn)位于第二象限C.SKIPIF1<0 D.SKIPIF1<07.(2022·湖南·長(zhǎng)沙一中高三階段練習(xí))(多選)已知復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)的坐標(biāo)為SKIPIF1<0,則下列結(jié)論正確的是(

)A.SKIPIF1<0 B.復(fù)數(shù)SKIPIF1<0的共軛復(fù)數(shù)是SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0的虛部為SKIPIF1<08.(2022·內(nèi)蒙古赤峰·三模)若復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則(

)A.SKIPIF1<0B.SKIPIF1<0是純虛數(shù)C.復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第二象限D(zhuǎn).若復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在角SKIPIF1<0的終邊上,則SKIPIF1<0題組二題組二復(fù)數(shù)的模長(zhǎng)1.(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第四象限,則復(fù)數(shù)z的模的取值范圍是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))如果復(fù)數(shù)z滿足|z+i|+|z-i|=2,那么|z+i+1|的最小值是(

)A.1 B.SKIPIF1<0 C.2 D.SKIPIF1<03.(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0是虛數(shù)單位,復(fù)數(shù)SKIPIF1<0的共軛復(fù)數(shù)為SKIPIF1<0,下列說法正確的是(

)A.如果SKIPIF1<0,則SKIPIF1<0,SKIPIF1<0互為共軛復(fù)數(shù)B.如果復(fù)數(shù)SKIPIF1<0,SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0C.如果SKIPIF1<0,則SKIPIF1<0D.SKIPIF1<04.(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0、SKIPIF1<0,且SKIPIF1<0,SKIPIF1<0(SKIPIF1<0是虛數(shù)單位),則SKIPIF1<0的最小值為(

)A.4 B.3 C.2 D.15.(2022·全國(guó)·高三專題練習(xí))若存在復(fù)數(shù)SKIPIF1<0同時(shí)滿足SKIPIF1<0,SKIPIF1<0,則實(shí)數(shù)SKIPIF1<0的取值范圍是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·全國(guó)·高三專題練習(xí)(文))已知復(fù)數(shù)SKIPIF1<0為虛數(shù)單位SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)為SKIPIF1<0,復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則下列結(jié)論不正確的是(

)A.SKIPIF1<0點(diǎn)的坐標(biāo)為SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0的最大值為SKIPIF1<0 D.SKIPIF1<0的最小值為SKIPIF1<07(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0為虛數(shù)單位,且SKIPIF1<0,復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則復(fù)數(shù)SKIPIF1<0對(duì)應(yīng)點(diǎn)的軌跡方程為(

)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<08.(2022·全國(guó)·高三專題練習(xí))已知復(fù)數(shù)SKIPIF1<0和SKIPIF1<0滿足SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0的取值范圍為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<09.(2022·全國(guó)·高三專題練習(xí))若i為虛數(shù)單位,復(fù)數(shù)z滿足SKIPIF1<0,則SKIPIF1<0的最大值為(

)A.2 B.3 C.SKIPIF1<0 D.SKIPIF1<010.(2022·全國(guó)·高三專題練習(xí))已知復(fù)數(shù)SKIPIF1<0滿足:SKIPIF1<0,那么SKIPIF1<0的最小值為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0題組三題組三復(fù)數(shù)的幾何意義1.(2022·全國(guó)·江西師大附中)已知復(fù)數(shù)SKIPIF1<0,則z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在(

)A.第一象限 B.第二象限 C.第三象限 D.第四象限2.(2022·陜西漢中·二模(文))已知復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第四象限,則實(shí)數(shù)SKIPIF1<0的取值范圍是(

).A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<03.(2022·貴州)復(fù)數(shù)SKIPIF1<0(其中SKIPIF1<0為虛數(shù)單位),則z在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于(

)A.第一象限 B.第二象限 C.第三象限 D.第四象限4.(2022·湖南·一模)已知復(fù)數(shù)SKIPIF1<0,則z的共軛復(fù)數(shù)在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于(

)A.第一象限 B.第二象限 C.第三象限 D.第四象限題組四題組四復(fù)數(shù)與其他知識(shí)的綜合運(yùn)用1.(2022·全國(guó)·高三專題練習(xí))設(shè)n是偶數(shù),SKIPIF1<0,a?b分別表示SKIPIF1<0的展開式中系數(shù)大于0與小于0的項(xiàng)的個(gè)數(shù),那么(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))在復(fù)平面內(nèi),復(fù)數(shù)z滿足SKIPIF1<0,且z所對(duì)應(yīng)的點(diǎn)在第一象限或坐標(biāo)軸的非負(fù)半軸上,則SKIPIF1<0的最小值為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.1 D.23.(2022·全國(guó)·高三專題練習(xí))若SKIPIF1<0,SKIPIF1<0為復(fù)數(shù),則“SKIPIF1<0是實(shí)數(shù)”是“SKIPIF1<0,SKIPIF1<0互為共軛復(fù)數(shù)”的(

)A.充分不必要條件 B.必要不充分條件C.充要條件 D.既不充分也不必要條件4.(2022·全國(guó)·高三專題練習(xí)(文))已知SKIPIF1<0(SKIPIF1<0,SKIPIF1<0為虛數(shù)單位),又?jǐn)?shù)列SKIPIF1<0滿足:當(dāng)SKIPIF1<0時(shí),SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),SKIPIF1<0為SKIPIF1<0的虛部.若數(shù)列SKIPIF1<0的前SKIPIF1<0項(xiàng)和為SKIPIF1<0,則SKIPIF1<0(

).A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<05.(2022·全國(guó)·高三專題練習(xí))設(shè)復(fù)數(shù)SKIPIF1<0(SKIPIF1<0為虛數(shù)單位),若對(duì)任意實(shí)數(shù)SKIPIF1<0,SKIPIF1<0,則實(shí)數(shù)SKIPIF1<0的取值范圍為(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.(2022·全國(guó)·高三專題練習(xí))(多選)歐拉公式eix=cosx+isinx(i為虛數(shù)單位,x∈R)是由瑞士著名數(shù)學(xué)家歐拉發(fā)現(xiàn)的,它將指數(shù)函數(shù)的定義域擴(kuò)大到復(fù)數(shù),建立了三角函數(shù)和指數(shù)函數(shù)之間的關(guān)系,它在復(fù)變函數(shù)中占有非常重要的地位,它被譽(yù)為“數(shù)學(xué)中的天橋”,當(dāng)SKIPIF1<0時(shí),eπi+1=0被稱為數(shù)學(xué)上的“優(yōu)美公式”,根據(jù)此公式可知,下面結(jié)論中正確的是(

)A.|eix|=1 B.cosx=SKIPIF1<0C.cosx=SKIPIF1<0 D.e2i在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于第二象限7.(2022·全國(guó)·高三專題練習(xí))設(shè)復(fù)數(shù)SKIPIF1<0,則SKIPIF1<0SKIPIF1<0______.8.(2022·全國(guó)·高三專題練習(xí)(文))已知SKIPIF1<0的二項(xiàng)展開式中的常數(shù)項(xiàng)的值是SKIPIF1<0,若SKIPIF1<0(其中SKIPIF1<0是虛數(shù)單位),則復(fù)數(shù)SKIPIF1<0的模SKIPIF1<0___________.(結(jié)果用數(shù)值表示)9.(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0,函數(shù)SKIPIF1<0為偶函數(shù),則SKIPIF1<0=________.10.(2022·全國(guó)·高三專題練習(xí)(文))已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0(SKIPIF1<0,SKIPIF1<0為虛數(shù)單位),在復(fù)平面上,設(shè)復(fù)數(shù)SKIPIF1<0、SKIPIF1<0對(duì)應(yīng)的點(diǎn)分別為SKIPIF1<0、SKIPIF1<0,若SKIPIF1<0,其中SKIPIF1<0是坐標(biāo)原點(diǎn),則函數(shù)SKIPIF1<0的最小正周期為________.題組五題組五解復(fù)數(shù)的方程1.(2022·陜西·西北工業(yè)大學(xué)附屬中學(xué)高三階段練習(xí)(理))下列關(guān)于復(fù)數(shù)的命題中(其中SKIPIF1<0為虛數(shù)單位),說法正確的是(

)A.若復(fù)數(shù)SKIPIF1<0,SKIPIF1<0的模相等,則SKIPIF1<0,SKIPIF1<0是共軛復(fù)數(shù)B.已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0C.若關(guān)于x的方程SKIPIF1<0(SKIPIF1<0)有實(shí)根,則SKIPIF1<0D.SKIPIF1<0是關(guān)于x的方程SKIPIF1<0的一個(gè)根,其中SKIPIF1<0為實(shí)數(shù),則SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))已知SKIPIF1<0是實(shí)系數(shù)一元二次方程SKIPIF1<0的一個(gè)虛數(shù)根,且SKIPIF1<0,若向量SKIPIF1<0,則向量SKIPIF1<0的取值范圍為_________3.(2022·全國(guó)·高三專題練習(xí))實(shí)系數(shù)一元二次方程SKIPIF1<0的一根為SKIPIF1<0(其中SKIPIF1<0為虛數(shù)單位),則SKIPIF1<0______.4.(2022·上海徐匯·二模)若關(guān)于SKIPIF1<0的實(shí)系數(shù)一元二次方程SKIPIF1<0的一根為SKIPIF1<0(SKIPIF1<0為虛數(shù)單位),則SKIPIF1<0____.題組六題組六復(fù)數(shù)的綜合運(yùn)用1.(2022·重慶南開中學(xué)模擬預(yù)測(cè))(多選)已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0是SKIPIF1<0的共軛復(fù)數(shù),則下列結(jié)論正確的是(

)A.若SKIPIF1<0,則SKIPIF1<0 B.若SKIPIF1<0,則SKIPIF1<0C.若SKIPIF1<0,則SKIPIF1<0 D.若SKIPIF1<0,則SKIPIF1<02.(2022·廣東·執(zhí)信中學(xué)高三階段練習(xí))(多選)已知復(fù)數(shù)SKIPIF1<0(SKIPIF1<0且SKIPIF1<0),SKIPIF1<0是z的共軛復(fù)數(shù),則下列命題中的真命題是(

)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·全國(guó)·高三專題練習(xí))(多選)歐拉公式被稱為世界上最完美的公式,歐拉公式又稱為歐拉定理,是用在復(fù)分析領(lǐng)域的公式,歐拉公式將三角函數(shù)與復(fù)數(shù)指數(shù)函數(shù)相關(guān)聯(lián),即SKIPIF1<0(SKIPIF1<0).根據(jù)歐拉公式,下列說法正確的是(

)A.對(duì)任意的SKIPIF1<0,SKIPIF1<0B.SKIPIF1<0在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第二象限C.SKIPIF1<0的實(shí)部為SKIPIF1<0D.SKIPIF1<0與SKIPIF1<0互為共軛復(fù)數(shù)4.(2022·江蘇·南京大學(xué)附屬中學(xué)高三階段練習(xí))(多選)下列命題中正確的有(

)A.若復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0; B.若復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0;C.若復(fù)數(shù)SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0; D.若復(fù)數(shù)SKIPIF1<0,則SKIPIF1<0.5.(2022·全國(guó)·高三專題練習(xí))(多選)在下列命題中,正確命題的個(gè)數(shù)為(

)A.兩個(gè)復(fù)數(shù)不能比較大小;B.若SKIPIF1<0是純虛數(shù),則實(shí)數(shù)SKIPIF1<0;C.SKIPIF1<0的一個(gè)充要條件是SKIPIF1<0;D.SKIPIF1<0的充要條件是SKIPIF1<0.6(2022·全國(guó)·高三專題練習(xí)(文))(多選)設(shè)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為復(fù)數(shù),SKIPIF1<0.下列命題中正確的是(

)A.若SKIPIF1<0,則SKIPIF1<0 B.若SKIPIF1<0,則SKIPIF1<0C.若SKIPIF1<0,則SKIPIF1<0 D.若SKIPIF1<0,則SKIPIF1<07.(2022·全國(guó)·高三專題練習(xí))(多選)已知復(fù)數(shù)SKIPIF1<0,SKIPIF1<0是SKIPIF1<0的共軛復(fù)數(shù),則(

)A.SKIPIF1<0 B.SKIPIF1<0C.復(fù)數(shù)SKIPIF1<0在復(fù)平面內(nèi)所對(duì)應(yīng)的點(diǎn)在第一

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