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以为准线的抛物线的标准方程为A.B.x2=yC.D.y2=
试题详情
以
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)
为准线的抛物线的标准方程为( )
A.
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kExyzVyf0nMbFTfXiSFuVM4qU/8kG7rATxYmK/dykcSVvWaV4HLy2fYqiNV6loygQTtsO7oHuvPC
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)
B.x
2=y
C.
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)
D.y
2=
相关试题
-
以
为准线的抛物线的标准方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAGvSURBVFhH7VeBEYMgDMxk7MQ6LJNRGCUlIhTU
KkZSrFfvel5bkTz/+SRAD7jgARjoD6Ibi96RAUPOy944ngm0BADhow0ibxQ2syg7rt1VSFYVBFOd
Ap9oBzJS3j8CUQbhEamUqneGwLjqt+vUKINYBcjS+nUQzMTPyalmItDenQXe4YtyQmvDdhrXl0Cw
jFTcdXa8WCtAtEdbsQvJXOVB+L4ElIJouffm8hDEZKnzKb3vWrKSwQO0kcbKNlVsVBBg6hSymXDu
LGINr41MbDRg6HoXNAGIGBw5w30VA9hWwCynpTsguZOtRUsupGcSnL01JeQo6c8SLkC8ncEHFnSs
VMgGK2WnPs0gmLIZRFhgT7IgDK15GXKXsNPlViBMYECnIjfHu3ow1Sc2oMnWt+w9rYouNcA6y1ml
kExyzVyf0nMbFTfXiSFuVM4qU/8kG7rATxYmK/dykcSVvWaV4HLy2fYqiNV6loygQTtsO7oHuvPC
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3COYeAHkkW/nDfauywAAAABJRU5ErkJggg==
)
B.x2=y
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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WItFa8mk+E0JhZJT70IAa+0yZppDkHGx9XaytmkHuBILbozT4+yZXbM0cwHKpO3ZY4KIF7DQ0XDW
3nv7Jg9p3kMAVeIbnWSd22tGk9U3CL3RItN8GghXAyiQDHEmhdZM23esheA6DkrdgrZl0Fq7TDWk
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)
D.y2=
-
以
为准线的抛物线的标准方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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jFTcdXa8WCtAtEdbsQvJXOVB+L4ElIJouffm8hDEZKnzKb3vWrKSwQO0kcbKNlVsVBBg6hSymXDu
LGINr41MbDRg6HoXNAGIGBw5w30VA9hWwCynpTsguZOtRUsupGcSnL01JeQo6c8SLkC8ncEHFnSs
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3COYeAHkkW/nDfauywAAAABJRU5ErkJggg==
)
B.x2=y
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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ZKMh2XXLeLZWsKY5rhU7HcxRHOjvKZBbxJV7by2/QpiUuu3Sfh9lqzY8hq4a+4Alf2pphwRw3SJB
WItFa8mk+E0JhZJT70IAa+0yZppDkHGx9XaytmkHuBILbozT4+yZXbM0cwHKpO3ZY4KIF7DQ0XDW
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)
D.y2=
-
以
为准线的抛物线的标准方程为( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
B.x2=y
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADEAAAAjCAYAAAA9guKMAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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pCGUZJqZTqYdCZ/39kcZvuBiL2DAP0Q3FZVEzjhK1fbG+UqAQMaY/oyG8BPpyQS0bdfpU4BiKARJ
7RZuZGfIW3UvggyGUAAYWlVJjozL6Lf70gyGOCyQrPV0CFLicXaKldCyd1eBZvihnUAIPd2I60cQ
ZKMh2XXLeLZWsKY5rhU7HcxRHOjvKZBbxJV7by2/QpiUuu3Sfh9lqzY8hq4a+4Alf2pphwRw3SJB
WItFa8mk+E0JhZJT70IAa+0yZppDkHGx9XaytmkHuBILbozT4+yZXbM0cwHKpO3ZY4KIF7DQ0XDW
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qhXQwrNKwc42S5Xj9Wud6LurydvCs4rpn/KHrjQbpWuaClE8q/gkE8TDyW5OhcieVcjKlefupSB8
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)
D.y2=
-
若抛物线的准线方程为x=-7,则抛物线的标准方程为( )
A.x2=-28y
B.x2=28y
C.y2=-28
D.y2=28
-
抛物线的顶点在原点,准线是x=4,它的标准方程是( )
A.y2=-16
B.x2=-16y
C.y2=-8
D.x2=8y
-
抛物线的顶点在原点,准线是x=4,它的标准方程是( )
A.y2=-16
B.x2=-16y
C.y2=-8
D.x2=8y
-
设抛物线的顶点在原点,准线方程式为y=1,则抛物线的方程式为( )
A.y2=4
B.x2=-4y
C.y2=-4
D.x2=4y
-
经过点(2,4)的抛物线的标准方程是( )
A.y2=8
B.x2=y
C.y2=8x或x2=y
D.无法确定
-
设抛物线的焦点为F(-2,0),则抛物线的标准方程是( )
A.y2=-8
B.x2=-8y
C.y2=-4
D.x2=-4y
-
设抛物线的焦点为F(-2,0),则抛物线的标准方程是( )
A.y2=-8
B.x2=-8y
C.y2=-4
D.x2=-4y