已知函數(shù)f(x)=asinx-bcosx在x=處取得最小值.則函數(shù)y=f是 函數(shù).(用“奇 .“偶 .“非奇非偶 填空) 答案 奇 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=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

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

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

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

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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

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

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

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

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

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

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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)

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

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

 

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

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

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