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(2009•长宁区二模)函数的定义域是________.
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(2009•长宁区二模)函数
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAkCAYAAAD2IghRAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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AElFTkSuQmCC
)
的定义域是________.
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(2009•长宁区二模)函数
的定义域是________.
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(2009•长宁区二模)函数
的定义域是________.
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(2009•长宁区二模)函数
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(2009•长宁区二模)二次函数图象过A(2,1),B(0,1)和C(1,-1)三点.
(1)求该二次函数的解析式;
(2)该二次函数图象向下平移4个单位,向左平移2个单位后,原二次函数图象上的A、B两点相应平移到A1、B1处,求∠BB1A1的余弦值.
-
(2009•长宁区二模)如图,一次函数图象交反比例函数
图象于点M、N(N在M右侧),分别交x轴、y轴于点C、D.过点M、N作ME、NF分别垂直x轴,垂足为E、F.再过点E、F作EG、FH平行MN直线,分别交y轴于点G、H,ME交FH于点K.
(1)如果线段OE、OF的长是方程a2-4a+3=0的两个根,求该一次函数的解析式;
(2)设点M、N的横坐标分别为m、n,试探索四边形MNFK面积与四边形HKEG面积两者的数量关系;
(3)求证:MD=CN.
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(2010•长宁区二模)下列函数中,在定义域内y随x的增大而增大的函数是( )
A.y=-2
B.y=2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACIAAAAjCAYAAADxG9hnAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFmSURBVFhH5ZdtDsMgCIY5mXfiOl6Go3gUBvNj
im1susiarMl+2LX6iO8LFPghFzyEg/8QhJABIP9C5GSOwiciKXJAKksTo8K0cb7tApKIhgikGKao
uIBMhtBj+kVELAghsOHwOZoBZNDL5x/no0kcA3KVbQ/oCkIYOFrfFho3EHXKoAsRbD92AVFxtmRW
kxqMR3QZZJ7oaPJ878517607Ky3egRa2Pv9rwjmoBxvWb1PmiKi3YVQ0xbkw7QcRZ+MAQhyNz+5o
5Oo7XdHLFbHaKUk0jpKOQ0Q04xUQOSY8yzobSYprMkiQSKCzSOvemn2ze47rwMZAGNfI0NsldnOQ
pHdq+vDY+ska4rDzivg1V22Ym+5Kv/qb5lkjrptViHMNutSad7O8MIILyLuELNKCCwhJRGwtm1zz
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AElFTkSuQmCC
)
D.
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(2010•长宁区二模)函数
的定义域是________.
-
(2009•长宁区二模)不等式
的解集是________.
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(2009•长宁区二模)方程
的解是( )
A.1
B.-1
C.±1
D.方程无解
-
(2009•长宁区二模)将图形
绕中心旋转180°后的图形是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB0AAAAfCAIAAACUOVFTAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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r6/5wv6bmxuenjwdHx+PRCLep/T09PDs7OzUq8Tv9w8NDaH8cAinfD4fG9rb20dHR73X11dMsUS8
2MAmJNREzSKebm1txWIxgqsrxCeiSqVSc3OzVy6XjduecVyB8BlaQWcHyv39vVg6OTnBZRe/BK18
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NpVKaRxr5h0eHg4MDLj6glO0GB1E65sZaxlB0YSkjwHa29uLx+O8akQhhUKht7eXY3UFROpMnWn8
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FFxzXU2hr1wZhgeA8Bd08aCJt729PTc3h+M4ojHPhdLf3+/yVzSyE5YND1wHmNI8E65m6MrKyuLi
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AElFTkSuQmCC6I+B5LyY572R
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAfCAIAAACQzIFuAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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XVxc2B44nHp7ewsWgz1a0mCXOOfn52AxENZUAlLCI42gsrKywsLCPB8jKCjIz88vMDAQ2tfXFxpO
eHi4VhMTE+H4+PiEhoZKQJKxsbESiIuLS01N5TyPnIBD/P39+TOVjQ8PDyxzKn80EL29vd3Q0IC7
oDEUMals+soHWMAZ2OfBdrGY80f66upKR9o22cepCwsLKSkpbGGKZ+xsCI5UMORSobkP9zPHuv39
fYAQFS5y0PwFx1heXq6qqrJT5V9WZQEH7O3t6WDQ3Z9lBTM+Pv7y8hJ0O4BlVlkSOhBra2sFBQWI
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)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAIAAAC0Ujn1AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAPcSURBVEhL7ZbLK/9dEMe/7pRb7lJKsrKQIkoR
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6+v+/h7i4+Pj8vLy+fkZ+s/PeHp6+vz8ZImABMIQ7+/vZ2dnb29vcFRUGPrl5eXx8REidn5+fnV1
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)
D.