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10.4雙曲線(精講)(基礎(chǔ)版)思維導(dǎo)圖思維導(dǎo)圖考點(diǎn)呈現(xiàn)考點(diǎn)呈現(xiàn)例題剖析例題剖析考點(diǎn)一雙曲線的定義及應(yīng)用【例1-1】(2022·潮州二模)若點(diǎn)P是雙曲線SKIPIF1<0上一點(diǎn),SKIPIF1<0,SKIPIF1<0分別為SKIPIF1<0的左、右焦點(diǎn),則“SKIPIF1<0”是“SKIPIF1<0”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【例1-2】(2022·成都模擬)設(shè)SKIPIF1<0,SKIPIF1<0是雙曲線SKIPIF1<0的左,右焦點(diǎn),點(diǎn)P在雙曲線C的右支上,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0面積為().A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【例1-3】(2022常州期中)已知雙曲線SKIPIF1<0的右焦點(diǎn)為SKIPIF1<0,SKIPIF1<0為雙曲線左支上一點(diǎn),點(diǎn)SKIPIF1<0,則SKIPIF1<0周長(zhǎng)的最小值為()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<0【例1-4】(2021河北月考)已知方程SKIPIF1<0表示雙曲線,則實(shí)數(shù)SKIPIF1<0的取值范圍為()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<0【一隅三反】1.(2022高三上·廣東開學(xué)考)“k<2”是“方程SKIPIF1<0表示雙曲線”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2.(2022·運(yùn)城模擬)已知雙曲線SKIPIF1<0的左右焦點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是雙曲線上一點(diǎn),SKIPIF1<0,則SKIPIF1<0()A.1或13 B.1 C.13 D.93.(2022紅塔月考)已知SKIPIF1<0是雙曲線SKIPIF1<0的左焦點(diǎn),點(diǎn)SKIPIF1<0,SKIPIF1<0是雙曲線右支上的動(dòng)點(diǎn),則SKIPIF1<0的最小值為()A.9 B.5 C.8 D.44(2022廣東)已知SKIPIF1<0,SKIPIF1<0分別是雙曲線SKIPIF1<0的左?右焦點(diǎn),若P是雙曲線左支上的點(diǎn),且SKIPIF1<0.則SKIPIF1<0的面積為()A.8 B.SKIPIF1<0 C.16 D.SKIPIF1<0考點(diǎn)二雙曲線的離心率及漸近線【例2-1】(2022龍崗期中)雙曲線SKIPIF1<0的漸近線方程是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【例2-2】(2022長(zhǎng)春月考)在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0.若以A,B為焦點(diǎn)的雙曲線經(jīng)過點(diǎn)C,則該雙曲線的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【例2-3】(2022·重慶市模擬)已知雙曲線C:SKIPIF1<0的左右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0在SKIPIF1<0軸上,SKIPIF1<0為等邊三角形,且線段SKIPIF1<0的中點(diǎn)恰在雙曲線C上,則雙曲線C的離心率為()A.SKIPIF1<0 B.2 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·湖南模擬)已知O是坐標(biāo)原點(diǎn),F(xiàn)是雙曲線SKIPIF1<0的右焦點(diǎn),過雙曲線C的右頂點(diǎn)且垂直于x軸的直線與雙曲線C的一條漸近線交于A點(diǎn),若以F為圓心的圓經(jīng)過點(diǎn)A,O,則雙曲線C的漸近線方程為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022高三上·廣西開學(xué)考)已知SKIPIF1<0,SKIPIF1<0是雙曲線C的兩個(gè)焦點(diǎn),P為雙曲線上的一點(diǎn),且SKIPIF1<0;則C的離心率為()A.1 B.2 C.3 D.43.(202懷仁期末)設(shè)SKIPIF1<0,SKIPIF1<0分別是雙曲線SKIPIF1<0的左、右焦點(diǎn),若雙曲線右支上存在一點(diǎn)SKIPIF1<0,使SKIPIF1<0(SKIPIF1<0為坐標(biāo)原點(diǎn)),且SKIPIF1<0,則雙曲線的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04(2022德州月考)已知雙曲線SKIPIF1<0的左?右焦點(diǎn)分別為SKIPIF1<0,曲線SKIPIF1<0上一點(diǎn)SKIPIF1<0到SKIPIF1<0軸的距離為SKIPIF1<0,且SKIPIF1<0,則雙曲線SKIPIF1<0的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022遼寧期中)(多選)已知雙曲線SKIPIF1<0的左?右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0是雙曲線上一點(diǎn),若SKIPIF1<0,則該雙曲線的離心率可以是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.2考點(diǎn)三雙曲線的標(biāo)準(zhǔn)方程【例3-1】(2022·海寧模擬)已知雙曲線C的漸近線方程為SKIPIF1<0,且焦距為10,則雙曲線C的標(biāo)準(zhǔn)方程是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0或SKIPIF1<0 D.SKIPIF1<0或SKIPIF1<0【例3-2】(2022·河西模擬)已知雙曲線的一個(gè)焦點(diǎn)與拋物線SKIPIF1<0的焦點(diǎn)重合,且雙曲線上的一點(diǎn)SKIPIF1<0到雙曲線的兩個(gè)焦點(diǎn)的距離之差的絕對(duì)值等于6,則雙曲線的標(biāo)準(zhǔn)方程為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·河南模擬)已知雙曲線SKIPIF1<0的一條漸近線過點(diǎn)SKIPIF1<0,SKIPIF1<0是SKIPIF1<0的左焦點(diǎn),且SKIPIF1<0,則雙曲線SKIPIF1<0的方程為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02(2021高三上·寧波期末)已知雙曲線SKIPIF1<0與雙曲線SKIPIF1<0有相同的漸近線,且它們的離心率不相同,則下列方程中有可能為雙曲線SKIPIF1<0的標(biāo)準(zhǔn)方程的是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03(2022南山期末)已知雙曲線C過點(diǎn)SKIPIF1<0且漸近線為SKIPIF1<0,則雙曲線C的方程是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022商丘)若方程SKIPIF1<0表示雙曲線,則實(shí)數(shù)m的取值范圍是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2021肇東月考)以SKIPIF1<0,SKIPIF1<0為焦點(diǎn)且過點(diǎn)SKIPIF1<0的雙曲線方程是()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)四直線與雙曲線的位置關(guān)系【例4-1】(2022·全國(guó)·高三專題練習(xí))過SKIPIF1<0且與雙曲線SKIPIF1<0有且只有一個(gè)公共點(diǎn)的直線有(
)A.1條 B.2條 C.3條 D.4條【例4-2】(2022·全國(guó)·專題練習(xí))若過點(diǎn)SKIPIF1<0的直線SKIPIF1<0與雙曲線SKIPIF1<0:SKIPIF1<0的右支相交于不同兩點(diǎn),則直線SKIPIF1<0斜率的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2022·安徽)直線SKIPIF1<0與雙曲線SKIPIF1<0沒有公共點(diǎn),則斜率k的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))若雙曲線SKIPIF1<0的一個(gè)頂點(diǎn)為A,過點(diǎn)A的直線SKIPIF1<0與雙曲線只有一個(gè)公共點(diǎn),則該雙曲線的焦距為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0考點(diǎn)五弦長(zhǎng)與中點(diǎn)弦【例5-1】(2021·江西?。┮阎p曲線x2-y2=a2(a>0)與直線y=SKIPIF1<0x交于A、B兩點(diǎn),且|AB|=2SKIPIF1<0,則a=_____【例5-2】(2022·河南·模擬預(yù)測(cè)(文))已知雙曲線SKIPIF1<0的離心率為SKIPIF1<0,直線SKIPIF1<0與SKIPIF1<0交于SKIPIF1<0兩點(diǎn),SKIPIF1<0為線段SKIPIF1<0的中點(diǎn),SKIPIF1<0為坐標(biāo)原點(diǎn),則SKIPIF1<0與SKIPIF1<0的斜率的乘積為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【一隅三反】1.(2021·全國(guó)·高二課時(shí)練習(xí))已知雙曲線SKIPIF1<0,過點(diǎn)SKIPIF1<0的直線l與雙曲線C交于M?N兩點(diǎn),若P為線段MN的中點(diǎn),則弦長(zhǎng)|MN|等于(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·高三專題練習(xí))已知雙曲線SKIPIF1<0的左?右焦點(diǎn)分別為SKIPIF1<0過左焦點(diǎn)SKIPIF1<0作斜率為2的直線與雙曲線交于A,B兩點(diǎn),P是AB的中點(diǎn),O為坐標(biāo)原點(diǎn),若直線OP的斜率為SKIPIF1<0,則b的值是(
)A.2 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022·山東煙臺(tái)·三模)過雙曲線SKIPIF1<0:SKIPIF1<0(SKIPIF1<0,SKIPIF1<0)的焦點(diǎn)且斜率不為0的直線交SKIPIF1<0于A,SKIPIF1<0兩點(diǎn),SKIPIF1<0為SKIPIF1<0中點(diǎn),若SKIPIF1<0,則SKIPIF1<0的離心率為(
)A.SKIPIF1<0 B.2 C.SKIPIF1<0 D.SKIPIF1<04.(2023·全國(guó)·高三專題練習(xí))已知雙曲線C的中心在坐標(biāo)原點(diǎn),其中一個(gè)焦點(diǎn)為SKIPIF1<0,過F的直線l與雙曲線C交于A、B兩點(diǎn),且AB的中點(diǎn)為SKIPIF1<0,則C的離心率為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.(2022·四川?。┮阎行脑谠c(diǎn)的雙曲線C的右焦點(diǎn)為(2,0),右頂點(diǎn)為(SKIPIF1<0,0).(1)求雙曲線C的方程;(2)若直線l:y=x+2與雙曲線交于A,B兩點(diǎn),求弦長(zhǎng)|AB|.10.4雙曲線(精練)(基礎(chǔ)版)題組一題組一雙曲線的定義及應(yīng)用1.(2021·太原期末)已知SKIPIF1<0,SKIPIF1<0分別是雙曲線SKIPIF1<0的左右焦點(diǎn),點(diǎn)P在該雙曲線上,若SKIPIF1<0,則SKIPIF1<0()A.4 B.4或6 C.3 D.3或72.(2022郫都期中)雙曲線SKIPIF1<0的兩個(gè)焦點(diǎn)為SKIPIF1<0,SKIPIF1<0,雙曲線上一點(diǎn)SKIPIF1<0到SKIPIF1<0的距離為11,則點(diǎn)SKIPIF1<0到SKIPIF1<0的距離為()A.1 B.21 C.1或21 D.2或213.(2021懷仁期中)已知SKIPIF1<0,SKIPIF1<0是雙曲線SKIPIF1<0的左右焦點(diǎn),過SKIPIF1<0的直線SKIPIF1<0與曲線SKIPIF1<0的右支交于SKIPIF1<0兩點(diǎn),則SKIPIF1<0的周長(zhǎng)的最小值為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022奉賢期中)已知SKIPIF1<0是雙曲線SKIPIF1<0右支上的一點(diǎn),雙曲線的一條漸近線方程為SKIPIF1<0.設(shè)SKIPIF1<0分別為雙曲線的左、右焦點(diǎn).若SKIPIF1<0,則SKIPIF1<0.5.(2022·開封模擬)若雙曲線SKIPIF1<0的焦距為SKIPIF1<0,則實(shí)數(shù)SKIPIF1<0.6.(2022·岳普湖模擬)已知雙曲線SKIPIF1<0,F(xiàn)1,F(xiàn)2是雙曲線的左右兩個(gè)焦點(diǎn),P在雙曲線上且在第一象限,圓M是△F1PF2的內(nèi)切圓.則M的橫坐標(biāo)為,若F1到圓M上點(diǎn)的最大距離為SKIPIF1<0,則△F1PF2的面積為.7.(2021溫州期中)已知雙曲線x2-y2=1,點(diǎn)F1,F(xiàn)2為其兩個(gè)焦點(diǎn),點(diǎn)P為雙曲線上一點(diǎn),若PF1⊥PF2,則∣PF1∣+∣PF2∣的值為.題組二題組二雙曲線的離心率及漸近線1.(2021高三上·南開期末)已知雙曲線SKIPIF1<0,過原點(diǎn)作一條傾斜角為SKIPIF1<0的直線分別交雙曲線左、右兩支于SKIPIF1<0、SKIPIF1<0兩點(diǎn),以線段SKIPIF1<0為直徑的圓過右焦點(diǎn)SKIPIF1<0,則雙曲線的離心率為().A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022湖南月考)已知雙曲線的左焦點(diǎn)為SKIPIF1<0,右焦點(diǎn)為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0為雙曲線右支上一點(diǎn),SKIPIF1<0為坐標(biāo)原點(diǎn),滿足SKIPIF1<0,且SKIPIF1<0,則該雙曲線的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.2 D.SKIPIF1<03.(2021·全國(guó)甲卷)已知F1,F(xiàn)2是雙曲線C的兩個(gè)焦點(diǎn),P為C上一點(diǎn),且∠F1PF2=60°,|PF1|=3|PF2|,則C的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.(2022·靖遠(yuǎn)模擬)若雙曲線SKIPIF1<0的兩條漸近線與直線y=2圍成了一個(gè)等邊三角形,則C的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.25.(2022·新鄉(xiāng)三模)已知雙曲線SKIPIF1<0的頂點(diǎn)到一條漸近線的距離為實(shí)軸長(zhǎng)的SKIPIF1<0,則雙曲線C的離心率為()A.SKIPIF1<0 B.2 C.SKIPIF1<0 D.36.(2022·湘贛皖模擬)已知雙曲線SKIPIF1<0的左、右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,雙曲線C上一點(diǎn)P到x軸的距離為c,且SKIPIF1<0,則雙曲線C的離心率為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.(2022·濟(jì)南二模)已知SKIPIF1<0,SKIPIF1<0分別為雙曲線SKIPIF1<0的左?右焦點(diǎn),點(diǎn)P在雙曲線上,若SKIPIF1<0,SKIPIF1<0,則雙曲線的離心率為.8.(2022·汝州模擬)已知雙曲線SKIPIF1<0的兩條漸近線所夾銳角為SKIPIF1<0,則雙曲線的離心率為.題組三題組三雙曲線的標(biāo)準(zhǔn)方程1.(2022·安徽模擬)與橢圓SKIPIF1<0共焦點(diǎn)且過點(diǎn)SKIPIF1<0的雙曲線的標(biāo)準(zhǔn)方程為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022合肥期末)已知點(diǎn)SKIPIF1<0分別是等軸雙曲線SKIPIF1<0的左、右焦點(diǎn),SKIPIF1<0為坐標(biāo)原點(diǎn),點(diǎn)SKIPIF1<0在雙曲線SKIPIF1<0上,SKIPIF1<0,SKIPIF1<0的面積為8,則雙曲線SKIPIF1<0的方程為()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.(2022資陽(yáng)期末)已知雙曲線SKIPIF1<0過三點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0中的兩點(diǎn),則SKIPIF1<0的方程為.4.(2022徐匯期末)已知雙曲線經(jīng)過點(diǎn)SKIPIF1<0,其漸近線方程為SKIPIF1<0,則該雙曲線的方程為.5.(2022河南月考)經(jīng)過點(diǎn)SKIPIF1<0且與雙曲線SKIPIF1<0有公共漸近線的雙曲線方程為.6.(2022·湖北模擬)在平面直角坐標(biāo)系中,已知圓SKIPIF1<0:SKIPIF1<0,點(diǎn)SKIPIF1<0,SKIPIF1<0是圓SKIPIF1<0上任意一點(diǎn),線段SKIPIF1<0的垂直平分線與直線SKIPIF1<0相交于點(diǎn)SKIPIF1<0,設(shè)點(diǎn)SKIPIF1<0的軌跡為曲線SKIPIF1<0,則曲線SKIPIF1<0的方程為.7.(2022·遼寧模擬)已知雙曲線SKIPIF1<0的一條漸近線方程為SKIPIF1<0,一個(gè)焦點(diǎn)到一條漸近線的距離為SKIPIF1<0,則雙曲線的標(biāo)準(zhǔn)方程為.8.(2022·寧德模擬)若過點(diǎn)SKIPIF1<0的雙曲線的漸近線為SKIPIF1<0,則該雙曲線的標(biāo)準(zhǔn)方程是.9.(2022·廣州模擬)寫出一個(gè)同時(shí)滿足下列性質(zhì)①②③的雙曲線方程.①中心在原點(diǎn),焦點(diǎn)在y軸上;②一條漸近線方程為SKIPIF1<0﹔③焦距大于10題組四題組四直線與雙曲線的位置關(guān)系1.(2022·全國(guó)·課時(shí)練習(xí))已知直線l的方程為SKIPIF1<0,雙曲線C的方程為SKIPIF1<0.若直線l與雙曲線C的右支相交于不同的兩點(diǎn),則實(shí)數(shù)k的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.(2022·全國(guó)·課時(shí)練習(xí))直線SKIPIF1<0與雙曲線SKIPIF1<0上支的交點(diǎn)個(gè)數(shù)為______.3.(2022·全國(guó)·課時(shí)練習(xí))直線SKIPIF1<0與雙曲線SKIPIF1<0的交點(diǎn)坐標(biāo)為______.4.(2022·全國(guó)·高三專題練習(xí))直線SKIPIF1<0與雙曲線SKIPIF1<0沒有交點(diǎn),則SK
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