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若双曲线-=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=________.
试题详情
若双曲线
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAqCAYAAABoQtHyAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAExSURBVEhLvVWLrcQwCMtk2Yl1WIZRMgoH+TQ/
0qTR0zupumsVFxtszvHFx11g+K9BgdE7dk4vYGooLSsFBMaQThII0CPn20N6Adk31Q41EcNnkFSC
wlXoHlUirHpU4xYU0DO0rduBFOAfWsSYfy8rxTbHGZXLPyPY0rNs5pSCvq3QGAdpguJDHZ5MnAzR
a5AYRH1WRb97/9GktMbWrqAZJO30ou0QFUEEYv2sK8g3DsMcK0rjCq2cnyYCG3rfQn833G810um7
Sr0pR5PO9/eV/k/TslJcW6qphq+cNbuXMjYfXoMIpjU8ea9/kPwHYuAyCsv4Pb1cBSjZfEWzA8VD
nct1Hc/h3IDsNWDSqxnMGodQDi3PQSzqVaMRSmNOSYf1D/g63J0f7/K0e+vLhv0G/QFVB8UZyP06
WwAAAABJRU5ErkJggg==
)
-
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAAqCAYAAABoQtHyAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAErSURBVEhLzVXbDQMxCGOy7JR1WIZRMgrNO+RN
o3600km99hxssDnghw88YPjXIMdogAHCZZkEpW0lh5bRpSfJeqBBzrdKeg7ZiGpKTcT2a5CvZAtX
T1dVibDpCRqvIIeGrWzdDRQAptIixvx9Wym2Oc6oXKaO4EpvZTMoU6+8w0zEIJeg8GPgDkIt2d42
IzDRIytA3nM4tGtANVChRFgF72IzgO5V2nCzeBLOPoUzVYouBjHIc54r6KK9OwWcYi5Ty2Uiz6Ta
v2826k05mnS+V+Vp6z2tlvLcm6apSh501DrmPD88VPKrqmYprC2Y9sPcCOfqFk2J0YAk1y5jvYhl
I+pS0WkSJx6cf2x53B2LJXOe00bXAZReaitZPSicLLbqpg/3F8C/GVaRkw/M7NeazWy1nQAAAABJ
RU5ErkJggg==
)
=1的渐近线与圆(x-3)
2+y
2=r
2(r>0)相切,则r=________.
相关试题
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双曲线
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=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
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YII=
)
B.2
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=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
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YII=
)
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B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAASCAYAAABfJS4tAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAD8SURBVDhPzVQxEoQgDMy7KHiOPT+h5iG0eYgF
T8kRUEhQGZyxOGcslOyy2SwAvXwAgJbel7yFdOVZqxJMf0KMrvtmA6VJrxfFKZA9fXfYkEC80H4g
OS4SBeMemjjXNyEVe0IhISqFKViCiWpFnJLCohPEl67ZlmXFAj3gLqmQu95ZfZcKxpRsK48lWvl9
P8HHuB1DtKGOXihOFKyjPteXxLlczqcRo7N0bNYZ43bEcOsxmp084XMh5p3UvHIBf8cYC6E3QMbv
tcVHYu5YpKIZry6XwZKivKpWxPJgiQwPHk+OW17aMpBVf35X7N4QGP89MffDqj9XfBq1SvwD9c9b
FOaX6DMAAAAASUVORK5CYII=
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
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YII=
)
D.4
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双曲线
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=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
B.2
C.3
D.6
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双曲线
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=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA8AAAASCAYAAACEnoQPAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC0SURBVDhPzZNNDsAQEIXnXBaOY+8m1g5i6yBd
zFFe/bY0pGpViUTEN+/NA2EwiAhLcwaP9p979HOYLWTNQfvL7IJtDy0tOCFhHYpU/h1mLmAW9PoL
3CbqNeib7Vsx3f0OnEqU4KTNCbz3/HgIbCWoBEhwqjxFdV9BsDcdTd/knEvnjCAIc2Q7U5hh5Sjt
5CCrd3BUaj5Kk1ffswqHovpcuW+ma+4wAiTMHhzrRvUt5WpqFT4BvDKYovKwNAUAAAAASUVORK5C
YII=
)
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C.3
D.6
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-
=1的渐近线与圆(x-3)2+y2=r2(r>0)相切,则r=________.
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求以过原点与圆x2+y2-4x+3=0相切的两直线为渐近线且过椭圆4x2+y2=4两焦点的双曲线方程.
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