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已知双曲线(a>0)的中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率...
试题详情
已知双曲线
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADoAAAAxCAYAAACLfLrrAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
(a>0)的中心在原点,右焦点与抛物线y
2=16x的焦点重合,则该双曲线的离心率等于( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALdJREFU
OE+9U9EVhDAI663MOmzCHEzRJZCW6ysoracfh8+fvhjSJH5Ep+ymAXZTHgKqEBRBnp8FhkrQ9CwA
lQSJVwxKjSRVn3QFIwjVtjcDMLqdCYCxdGHnF4xSTj7cXDPXEKy8Zbga/zSLNwyZB+Ms8eHNip8b
NcrS90OL3ubrAwu6Q89qgBB5XKoA89+uhuL6eo3bujHaFTRM2i7W9T4JKwrOATuG2fChQX8YcKX1
v92/w1qlegCBfNWPn8LVvwAAAABJRU5ErkJggg==
)
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAkCAYAAACe0YppAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAaxJREFU
WEftVtGVhDAIjB3Zj12kCJuwBwtIHb63PdgEBxjXqIGEjXs/d/natxCGGSDSAR5nOF3XGbzzrgxJ
wJaDoSzuoq85ysPAC0zIhII65yGsMqkHgVcI3oGPaGvw4HwACTsHzHf2xC93JRtKTWwTlmsA7yb8
N3/uwHh/krxlG9d4mVDimClluLPPQd+AlyCXRrHF5jpqrIHG0Uvy2crEMt/Ko9lwnvYozJrrJMt8
Bz5y2O7nGzNne0u9lymVvUrqlD81mVBvbrLE5uDWTEmzzUNUYXiHV8eJYkkTcbHFrj7GCTvtLfc8
zww49g768cW/i8BShxPwiTFFY9bKA8LMN9Ya8DLJj8/VVv1kDpgYsT4BnxJ2cCKr2YhA7Yv/Gntw
/ahLXRvMAkwxifWDb7UhzVJzGUJVS22IWeVKK8LxZfml3zwdVel9wekfOCvqJxtGqToVUuNHQ1yF
NJsOXQbGj4a82Si2AuUCcLJF3BYEzVYS2jBO1g2jBF2WOolw3SLS4Jotl4QJmFfhhxrNDvzBDt3M
2LJhtNW4YcNoAy7dbrAba9yAdLn694B/AM795LmxubGoAAAAAElFTkSuQmCC
)
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALNJREFU
OE+9U8ENBCEI9FqmHTqhDqqwCQ5WvUMWPR+bIzGbmHEYhtmXaJVdGWBX5RhQCaxVO0BS+8vOwILu
0rM2AKMg580UUIWgUxeUiJtEMhoQhIYAsyASX2Jdv2TMWXAO2DEwRg2VBIZB+o3jnlu92skDDJ8N
OqHj7grTcR6eEtlW782aNIzY5QC1HIlXDEqNFtRFi+8GM8AU2ATQcng/0IMZnPwx5vgFlj4cAO4b
+cM23/8S1Y8CDEIRAAAAAElFTkSuQmCC
)
D.
相关试题
-
已知双曲线
(a>0)的中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALdJREFU
OE+9U9EVhDAI663MOmzCHEzRJZCW6ysoracfh8+fvhjSJH5Ep+ymAXZTHgKqEBRBnp8FhkrQ9CwA
lQSJVwxKjSRVn3QFIwjVtjcDMLqdCYCxdGHnF4xSTj7cXDPXEKy8Zbga/zSLNwyZB+Ms8eHNip8b
NcrS90OL3ubrAwu6Q89qgBB5XKoA89+uhuL6eo3bujHaFTRM2i7W9T4JKwrOATuG2fChQX8YcKX1
v92/w1qlegCBfNWPn8LVvwAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAkCAYAAACe0YppAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALNJREFU
OE+9U8ENBCEI9FqmHTqhDqqwCQ5WvUMWPR+bIzGbmHEYhtmXaJVdGWBX5RhQCaxVO0BS+8vOwILu
0rM2AKMg580UUIWgUxeUiJtEMhoQhIYAsyASX2Jdv2TMWXAO2DEwRg2VBIZB+o3jnlu92skDDJ8N
OqHj7grTcR6eEtlW782aNIzY5QC1HIlXDEqNFtRFi+8GM8AU2ATQcng/0IMZnPwx5vgFlj4cAO4b
+cM23/8S1Y8CDEIRAAAAAElFTkSuQmCC
)
D.
-
已知双曲线
(a>0)的中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALdJREFU
OE+9U9EVhDAI663MOmzCHEzRJZCW6ysoracfh8+fvhjSJH5Ep+ymAXZTHgKqEBRBnp8FhkrQ9CwA
lQSJVwxKjSRVn3QFIwjVtjcDMLqdCYCxdGHnF4xSTj7cXDPXEKy8Zbga/zSLNwyZB+Ms8eHNip8b
NcrS90OL3ubrAwu6Q89qgBB5XKoA89+uhuL6eo3bujHaFTRM2i7W9T4JKwrOATuG2fChQX8YcKX1
v92/w1qlegCBfNWPn8LVvwAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAkCAYAAACe0YppAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAALNJREFU
OE+9U8ENBCEI9FqmHTqhDqqwCQ5WvUMWPR+bIzGbmHEYhtmXaJVdGWBX5RhQCaxVO0BS+8vOwILu
0rM2AKMg580UUIWgUxeUiJtEMhoQhIYAsyASX2Jdv2TMWXAO2DEwRg2VBIZB+o3jnlu92skDDJ8N
OqHj7grTcR6eEtlW782aNIzY5QC1HIlXDEqNFtRFi+8GM8AU2ATQcng/0IMZnPwx5vgFlj4cAO4b
+cM23/8S1Y8CDEIRAAAAAElFTkSuQmCC
)
D.
-
已知双曲线
中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率为________.
-
已知双曲线
中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率为________.
-
已知双曲线
中心在原点,右焦点与抛物线y2=16x的焦点重合,则该双曲线的离心率为________.
-
已知双曲线的中心在坐标原点,离心率e=2,且它的一个顶点与抛物线y2=-4x的焦点重合,则此双曲线的方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAAqCAYAAADvczj0AAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAAqCAYAAAAAsVPKAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADsAAAAqCAYAAAANryONAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
已知椭圆的中心在原点,离心率
,且它的一个焦点与抛物线y2=-4x的焦点重合,则此椭圆方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAAqCAYAAAAAsVPKAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
已知椭圆的中心在原点,离心率
,且它的一个焦点与抛物线y2=-4x的焦点重合,则此椭圆方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAAqCAYAAAAAsVPKAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
已知椭圆的中心在原点,离心率
,且它的一个焦点与抛物线y2=-4x的焦点重合,则此椭圆方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAAqCAYAAAAAsVPKAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
已知椭圆的中心在原点,离心率
,且它的一个焦点与抛物线y2=-4x的焦点重合,则此椭圆方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADkAAAAqCAYAAAAJWvOwAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAAqCAYAAAAAsVPKAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAitJREFU
aEPtWYlxxCAMdFqmHTqhDqqgCSJ+OB77bCR/55mbzE1i0KLVrlD+NDzL2x4D+m3P8jbAltl90EoL
thjqw4dr+aDT6YJWgmuhHFLJATgT2n+9Pfxt9FZCswdlextoIDd/HWjINA9cvz25h0KW0EmBVM+S
e6EEzeB0UrlKbyWYRonH6ERY2GrGohkRm4agDeAUiNRiYlBKysINzF5UDtEFbW3KenT4sGhhKGVt
qE5ki6v0RgHYWLRkFe6ui6VVVk/nNCJgiURZTm2oERLYVGKJ1kriJKdtcz29XZ9NpZ75GaC5Q9jE
OkOpR7GmDa13WRMI0K73XFNfHvSRtVpsin1AEzTYEYPa3hP9zkCDlpQOUdK8/N2nm9Tf21VkWugG
aFtTvq4V/BTfNEcd0NHycoEitKWsn6xBm9N0Cfb35w0qWnt4fupZthr1hNbSdsWyk+lDrjik9+eG
33V1qPTGBZ0EUsHF5ZvKORRXfJk8065kbPmcdj09CTSDDFN2XCVDGqDn1E2fiE70aDuuGI2/sgaM
wZHRLxz0ar2uBPNBB7/3Frin31kP+9hfzAfdaf2OhTn37RJ0PrPa0KTMDYVutQQ6n1nZkS/tsI4O
cjYNPXNmRQk4DRF617IrqtCEExoOBh+KufNfy6K+JxztxZZoZNr0yyd1UESHU4GWHHm+TQRstE0B
uhrS7RwFXQDXMIRiMFhfPp5J8/lt6NXTDPH9QN8gSVNCfGWm/wEfF4DAgUqargAAAABJRU5ErkJg
gg==
)
D.