題目列表(包括答案和解析)
已知函數(shù)在區(qū)間[0,1]單調(diào)遞增,在區(qū)間[1,2)單調(diào)遞減.
(1)求a的值;
(2)若點(diǎn)在函數(shù)f(x)的圖象上,求證點(diǎn)A關(guān)于直線x=1的對稱點(diǎn)B也在函數(shù)f(x)的圖象上;
(3)是否存在實(shí)數(shù)b,使得函數(shù)g(x)=bx2-1的圖象與函數(shù)f(x)的圖象恰有3個交點(diǎn),若存在,請求出實(shí)數(shù)b的值;若不存在,試說明理由.
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已知函數(shù)f(x)=x4-4x3+ax2-1在區(qū)間[0,1)單調(diào)遞增,在區(qū)間[1,2)單調(diào)遞減.
(1)求a的值.
(2)若點(diǎn)A(x0,f(x0))在函數(shù)f(x)的圖象上,求證:點(diǎn)A關(guān)于直線x=1的對稱點(diǎn)B也在函數(shù)f(x)的圖象上.
(3)是否存在實(shí)數(shù)b,使得函數(shù)g(x)=bx2-1的圖象與函數(shù)f(x)的圖象恰好有3個交點(diǎn),若存在,請求出實(shí)數(shù)b的值,若不存在,試說明理由.
(07年北師大附中) 已知函數(shù)f (x ) = x4-4x3 + ax2-1在區(qū)間[0,1]單調(diào)遞增,在區(qū)間[1,2單調(diào)遞減.
(1)求a的值;
(2)若點(diǎn)A (x0,f (x0))在函數(shù)f (x )的圖像上,求證點(diǎn)A關(guān)于直線x = 1的對稱點(diǎn)B也在函數(shù)f (x )的圖像上;
(3)是否存在實(shí)數(shù)b,使得函數(shù)g (x ) = bx2-1的圖像與函數(shù)f (x )的圖像恰有3個交點(diǎn),若存在,請求出實(shí)數(shù)b的值;若不存在,試說明理由.
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