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專題11雙曲線中的參數(shù)及范圍問題限時(shí):120分鐘滿分:150分一、單選題:本大題共8小題,每個(gè)小題5分,共40分.在每小題給出的選項(xiàng)中,只有一項(xiàng)是符合題目要求的.1.已知SKIPIF1<0為焦點(diǎn)在SKIPIF1<0軸上的雙曲線,其離心率為SKIPIF1<0,SKIPIF1<0為SKIPIF1<0上一動(dòng)點(diǎn)(除頂點(diǎn)),過點(diǎn)SKIPIF1<0的直線SKIPIF1<0,SKIPIF1<0分別經(jīng)過雙曲線的兩個(gè)頂點(diǎn),已知直線SKIPIF1<0的斜率SKIPIF1<0,則直線SKIPIF1<0的斜率SKIPIF1<0的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<02.已知雙曲線C:SKIPIF1<0,P為雙曲線C上的一點(diǎn),若點(diǎn)P到雙曲線C的兩條漸近線的距離之積為1,則雙曲線的半焦距c的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<03.已知點(diǎn)SKIPIF1<0為雙曲線SKIPIF1<0的下焦點(diǎn),SKIPIF1<0為其上頂點(diǎn),過SKIPIF1<0作垂直于SKIPIF1<0的實(shí)軸的直線交SKIPIF1<0于SKIPIF1<0、SKIPIF1<0兩點(diǎn),若SKIPIF1<0為銳角三角形,則SKIPIF1<0的離心率的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<04.平面直角坐標(biāo)系中,SKIPIF1<0為坐標(biāo)原點(diǎn),給定兩點(diǎn)SKIPIF1<0,點(diǎn)SKIPIF1<0滿足:SKIPIF1<0其中SKIPIF1<0,且SKIPIF1<0已知點(diǎn)SKIPIF1<0的軌跡與雙曲線SKIPIF1<0交于SKIPIF1<0兩點(diǎn),且以SKIPIF1<0為直徑的圓過原點(diǎn),若雙曲線的離心率不大于SKIPIF1<0,則雙曲線實(shí)軸長的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<05.設(shè)雙曲線SKIPIF1<0的離心率為SKIPIF1<0,A,B是雙曲線C上關(guān)于原點(diǎn)對稱的兩個(gè)點(diǎn),M是雙曲線C上異于A,B的動(dòng)點(diǎn),直線SKIPIF1<0斜率分別SKIPIF1<0,若SKIPIF1<0,則SKIPIF1<0的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<06.已知SKIPIF1<0分別是雙曲線SKIPIF1<0的左、右焦點(diǎn),點(diǎn)SKIPIF1<0是雙曲線上位于第一象限的一點(diǎn),線段SKIPIF1<0過點(diǎn)SKIPIF1<0且SKIPIF1<0,SKIPIF1<0的平分線與線段SKIPIF1<0交于點(diǎn)SKIPIF1<0,與SKIPIF1<0軸交于點(diǎn)SKIPIF1<0,則SKIPIF1<0的取值范圍為(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<07.已知雙曲線SKIPIF1<0的左、右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,點(diǎn)SKIPIF1<0是雙曲線SKIPIF1<0上的任意一點(diǎn),過點(diǎn)SKIPIF1<0作雙曲線SKIPIF1<0的兩條漸近線的平行線,分別與兩條漸近線交于SKIPIF1<0,SKIPIF1<0兩點(diǎn),若四邊形SKIPIF1<0(SKIPIF1<0為坐標(biāo)原點(diǎn))的面積為SKIPIF1<0,且SKIPIF1<0,則點(diǎn)SKIPIF1<0的縱坐標(biāo)的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<08.已知SKIPIF1<0分別是雙曲線SKIPIF1<0的左、右焦點(diǎn),過SKIPIF1<0的直線與雙曲線C的右支交于A,B兩點(diǎn),△SKIPIF1<0和△SKIPIF1<0的內(nèi)心分別為M,N,則SKIPIF1<0的取值范圍是(
)A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0二、多選題:本大題共4小題,每個(gè)小題5分,共20分.在每小題給出的選項(xiàng)中,只有一項(xiàng)或者多項(xiàng)是符合題目要求的.9.已知SKIPIF1<0為雙曲線SKIPIF1<0上的動(dòng)點(diǎn),過SKIPIF1<0作兩漸近線的垂線,垂足分別為SKIPIF1<0,SKIPIF1<0,記線段SKIPIF1<0,SKIPIF1<0的長分別為SKIPIF1<0,SKIPIF1<0,則(
)A.若SKIPIF1<0,SKIPIF1<0的斜率分別為SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0的最小值為SKIPIF1<0 D.SKIPIF1<0的最小值為SKIPIF1<010.雙曲線SKIPIF1<0的一條漸近線上的點(diǎn)SKIPIF1<0關(guān)于另一條漸近線的對稱點(diǎn)恰為右焦點(diǎn)SKIPIF1<0,點(diǎn)SKIPIF1<0是雙曲線上的動(dòng)點(diǎn),則SKIPIF1<0的值可能為A.4 B.SKIPIF1<0 C.2 D.SKIPIF1<011.已知雙曲線C:SKIPIF1<0的左、右焦點(diǎn)分別為SKIPIF1<0,SKIPIF1<0,設(shè)點(diǎn)P為C右支上一點(diǎn),P點(diǎn)到直線SKIPIF1<0的距離為d,過SKIPIF1<0的直線l與雙曲線C的右支有兩個(gè)交點(diǎn),則下列說法正確的是(
)A.SKIPIF1<0的最小值為2 B.SKIPIF1<0C.直線l的斜率的取值范圍是SKIPIF1<0 D.SKIPIF1<0的內(nèi)切圓圓心到y(tǒng)軸的距離為112.如圖,已知SKIPIF1<0,SKIPIF1<0分別為雙曲線SKIPIF1<0的左、右焦點(diǎn),兩條漸近線分別為SKIPIF1<0,SKIPIF1<0,過SKIPIF1<0,SKIPIF1<0作SKIPIF1<0的垂線,垂足分別為A,B,若四邊形SKIPIF1<0的面積為8,則以下選項(xiàng)正確的有(
)A.SKIPIF1<0B.若SKIPIF1<0,則雙曲線方程為SKIPIF1<0C.若SKIPIF1<0,則離心率e的范圍SKIPIF1<0D.延長SKIPIF1<0交SKIPIF1<0于點(diǎn)C,若SKIPIF1<0,則SKIPIF1<0三、填空題:本大題共4小題,每小題5分,共20分.把答案填在答題卡中的橫線上.13.已知雙曲線SKIPIF1<0的左、右焦點(diǎn)分別為SKIPIF1<0、SKIPIF1<0,以SKIPIF1<0為圓心,SKIPIF1<0的虛半軸長為半徑的圓與SKIPIF1<0的右支恰有兩個(gè)交點(diǎn),記為SKIPIF1<0、SKIPIF1<0,若四邊形SKIPIF1<0的周長為SKIPIF1<0,則SKIPIF1<0的焦距的取值范圍為.14.已知A是拋物線SKIPIF1<0:SKIPIF1<0的準(zhǔn)線上的點(diǎn),B是x軸上一點(diǎn),O為原點(diǎn),直線AB與雙曲線SKIPIF1<0:SKIPIF1<0兩漸近線分別交于不同兩點(diǎn)M,N.若雙曲線SKIPIF1<0的離心率為2,SKIPIF1<0,則SKIPIF1<0的取值范圍為.15.已知SKIPIF1<0、SKIPIF1<0分別為雙曲線SKIPIF1<0的左、右焦點(diǎn),SKIPIF1<0為雙曲線右支上一點(diǎn),滿足SKIPIF1<0,直線SKIPIF1<0與圓SKIPIF1<0有公共點(diǎn),則雙曲線的離心率的取值范圍是.16.已知雙曲線SKIPIF1<0的左右焦點(diǎn)為SKIPIF1<0、SKIPIF1<0,過左焦點(diǎn)SKIPIF1<0作垂直于SKIPIF1<0軸的直線交雙曲線的兩條漸近線于SKIPIF1<0、SKIPIF1<0兩點(diǎn),若SKIPIF1<0是鈍角,則雙曲線離心率的取值范圍是.四、解答題:本大題共6小題,共70分.解答應(yīng)寫出必要的文字說明、證明過程或演算步驟.17.雙曲線SKIPIF1<0的左頂點(diǎn)為SKIPIF1<0,焦距為4,過右焦點(diǎn)SKIPIF1<0作垂直于實(shí)軸的直線交SKIPIF1<0于SKIPIF1<0、SKIPIF1<0兩點(diǎn),且SKIPIF1<0是直角三角形.(1)求雙曲線SKIPIF1<0的方程;(2)SKIPIF1<0、SKIPIF1<0是SKIPIF1<0右支上的兩動(dòng)點(diǎn),設(shè)直線SKIPIF1<0、SKIPIF1<0的斜率分別為SKIPIF1<0、SKIPIF1<0,若SKIPIF1<0,求點(diǎn)SKIPIF1<0到直線SKIPIF1<0的距離SKIPIF1<0的取值范圍.18.已知圓SKIPIF1<0,定點(diǎn)SKIPIF1<0,N為圓C上一動(dòng)點(diǎn),線段MN的中垂線與直線CN交于點(diǎn)P.(1)證明:SKIPIF1<0為定值,并求出點(diǎn)P的軌跡SKIPIF1<0的方程;(2)若曲線SKIPIF1<0上一點(diǎn)Q,點(diǎn)A,B分別為SKIPIF1<0在第一象限上的點(diǎn)與SKIPIF1<0在第四象限上的點(diǎn),若SKIPIF1<0,SKIPIF1<0,求SKIPIF1<0面積的取值范圍.19.已知點(diǎn)SKIPIF1<0分別為雙曲線SKIPIF1<0的左頂點(diǎn)和右焦點(diǎn),過SKIPIF1<0且垂直于SKIPIF1<0軸的直線與雙曲線第一象限部分交于點(diǎn)SKIPIF1<0,SKIPIF1<0的面積為SKIPIF1<0.(1)求雙曲線SKIPIF1<0的方程;(2)若直線SKIPIF1<0與雙曲線的左、右兩支分別交于SKIPIF1<0,SKIPIF1<0兩點(diǎn),與雙曲線的兩條漸近線分別交于SKIPIF1<0,SKIPIF1<0兩點(diǎn),記SKIPIF1<0,SKIPIF1<0的面積分別為SKIPIF1<0,SKIPIF1<0(SKIPIF1<0為坐標(biāo)原點(diǎn)).若SKIPIF1<0,求實(shí)數(shù)SKIPIF1<0的取值范圍.20.已知雙曲線SKIPIF1<0的右焦點(diǎn)為SKIPIF1<0,過點(diǎn)SKIPIF1<0的直線SKIPIF1<0與雙曲線SKIPIF1<0的右支相交于SKIPIF1<0,SKIPIF1<0兩點(diǎn),點(diǎn)SKIPIF1<0關(guān)于SKIPIF1<0軸對稱的點(diǎn)為SKIPIF1<0.當(dāng)SKIPIF1<0時(shí),SKIPIF1<0.(1)求雙曲線SKIPIF1<0的方程;(2)若SKIPIF1<0的外心為SKIPIF1<0,求SKIPIF1<0的取值范圍.21.已知拋物線SKIPIF1<0
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