求作函數(shù)f (x)=的圖象.并指出其單調(diào)區(qū)間 查看更多

 

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精英家教網(wǎng)設(shè)函數(shù)f(x)=x2-2|x|-3(-3≤x≤3),
(1)證明函數(shù)f(x)是偶函數(shù);
(2)用分段函數(shù)表示f(x)并作出其圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間及相應(yīng)的單調(diào)性;
(4)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2|x|-3(-3≤x≤3),
(1)證明函數(shù)f(x)是偶函數(shù);
(2)用分段函數(shù)表示f(x)并作出其圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間及相應(yīng)的單調(diào)性;
(4)求函數(shù)的值域.

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設(shè)函數(shù)f(x)=x2-2|x|-3(-3≤x≤3),
(1)證明函數(shù)f(x)是偶函數(shù);
(2)用分段函數(shù)表示f(x)并作出其圖象;
(3)指出函數(shù)f(x)的單調(diào)區(qū)間及相應(yīng)的單調(diào)性;
(4)求函數(shù)的值域.

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已知f(x)=
x+2(x≤-2)
x2+2x(-2<x<1)
2x-1(x≥1)

(1)作出該函數(shù)的圖象,并指出其單調(diào)區(qū)間;
(2)求f(f(-3))的值;
(3)若f(a)=3,求實(shí)數(shù)a的值;
(4)若f(m)>m,求實(shí)數(shù)m的取值范圍.

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已知函數(shù)f(x)=x|m-x|(x∈R),且f(4)=0.
(1)求實(shí)數(shù)m的值;
(2)作出函數(shù)f(x)的圖象并判斷其零點(diǎn)個數(shù);
(3)根據(jù)圖象指出f(x)的單調(diào)遞減區(qū)間;
(4)根據(jù)圖象寫出不等式f(x)>0的解集;
(5)求集合M={m|使方程f(x)=m有三個不相等的實(shí)根}.

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