已知函數(shù)(.為常數(shù)..)在處取得最小值.則函數(shù)是 A.偶函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng) B.偶函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng) C.奇函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng) D.奇函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng) 查看更多

 

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已知函數(shù)f(x)=asinx-bcosx(a、b為常數(shù),a≠0,x∈R)在x=
π
4
處取得最小值,則函數(shù)y=f(
4
-x)
是( 。
A、偶函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)
B、偶函數(shù)且它的圖象關(guān)于點(diǎn)(
2
,0)
對(duì)稱(chēng)
C、奇函數(shù)且它的圖象關(guān)于點(diǎn)(
2
,0)
對(duì)稱(chēng)
D、奇函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

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已知函數(shù)f(x)=asinx-bcosx(a、b為常數(shù),a≠0,x∈R)在x=處取得最小值,則函數(shù)y=f(-x)是…(    )

A.偶函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

B.偶函數(shù)且它的圖象關(guān)于點(diǎn)(,0)對(duì)稱(chēng)

C.奇函數(shù)且它的圖象關(guān)于點(diǎn)(,0)對(duì)稱(chēng)

D.奇函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

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已知函數(shù)f(x)=asinx-bcosx(a、b為常數(shù),a≠0,x∈R)在處取得最小值,則函數(shù)是( )
A.偶函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)
B.偶函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
C.奇函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
D.奇函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

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已知函數(shù)f(x)=asinx-bcosx(a、b為常數(shù),a≠0,x∈R)在處取得最小值,則函數(shù)是( )
A.偶函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)
B.偶函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
C.奇函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
D.奇函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

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已知函數(shù)f(x)=asinx-bcosx(a、b為常數(shù),a≠0,x∈R)在處取得最小值,則函數(shù)是( )
A.偶函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)
B.偶函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
C.奇函數(shù)且它的圖象關(guān)于點(diǎn)對(duì)稱(chēng)
D.奇函數(shù)且它的圖象關(guān)于點(diǎn)(π,0)對(duì)稱(chēng)

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