(Ⅰ)函數(shù)在區(qū)間上是增函數(shù)還是減函數(shù)?證明你的結(jié)論, 查看更多

 

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設(shè)函數(shù)f(x)=x2-2|x|-1 (-3≤x≤3),
(1)證明f(x)是偶函數(shù);
(2)畫出這個函數(shù)的圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間,并說明在各個單調(diào)區(qū)間上f(x)是增函數(shù)還是減函數(shù);
(4)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2-1(-3≤x≤3).

(1)證明:f(x)是偶函數(shù);

(2)指出函數(shù)f(x)的單調(diào)區(qū)間,并說明在各個單調(diào)區(qū)間上f(x)是增函數(shù)還是減函數(shù);

(3)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2|x|-1 (-3≤x≤3),
(1)證明f(x)是偶函數(shù);
(2)畫出這個函數(shù)的圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間,并說明在各個單調(diào)區(qū)間上f(x)是增函數(shù)還是減函數(shù);
(4)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2|x|-1 (-3≤x≤3),
(1)證明f(x)是偶函數(shù);
(2)畫出這個函數(shù)的圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間,并說明在各個單調(diào)區(qū)間上f(x)是增函數(shù)還是減函數(shù);
(4)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2|x|-1 (-3≤x≤3),
(1)證明f(x)是偶函數(shù);
(2)畫出這個函數(shù)的圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間,并說明在各個單調(diào)區(qū)間上f(x)是增函數(shù)還是減函數(shù);
(4)求函數(shù)的值域.

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