題目列表(包括答案和解析)
已知函數(shù) f (x) = x3 -(l-3)x2 -(l +3)x + l -1(l > 0)在區(qū)間[n, m]上為減函數(shù),記m的最大值為m0,n的最小值為n0,且滿足m0-n0 = 4.
(1)求m0,n0的值以及函數(shù)f (x)的解析式;
(2)已知等差數(shù)列{xn}的首項(xiàng).又過點(diǎn)A(0, f (0)),B(1, f (1))的直線方程為y=g(x).試問:在數(shù)列{xn}中,哪些項(xiàng)滿足f (xn)>g(xn)?
(3)若對(duì)任意x1,x2∈ [a, m0](x1≠x2),都有成立,求a的最小值.
已知函數(shù)f(x)=(x-1)2,g(x)=4(x-1),數(shù)列{an}是各項(xiàng)均不為0的等差數(shù)列,其前n項(xiàng)和為Sn,點(diǎn)(an+1,S2n-1)在函數(shù)f(x)的圖象上;數(shù)列{bn}滿足b1=2,bn≠1,且(bn-bn+1)·g(bn)=f(bn)(n∈N+).
(1)求an并證明數(shù)列{bn-1}是等比數(shù)列;
(2)若數(shù)列{cn}滿足cn=,證明:c1+c2+c3+…+cn<3.
已知函數(shù)f(x)=(x-1)2,g(x)=4(x-1),數(shù)列{an}是各項(xiàng)均不為0的等差數(shù)列,其前n項(xiàng)和為Sn,點(diǎn)(an+1,S2n-1)在函數(shù)f(x)的圖象上;數(shù)列{bn}滿足b1=2,bn≠1,且(bn-bn+1)·g(bn)=f(bn)(n∈N+).
(1)求an并證明數(shù)列{bn-1}是等比數(shù)列;
(2)若數(shù)列{cn}滿足cn=,證明:c1+c2+c3+…+cn<3.
已知函數(shù)f(x)=(x-1)2,g(x)=4(x-1),數(shù)列{an}是各項(xiàng)均不為0的等差數(shù)列,其前n項(xiàng)和為Sn,點(diǎn)(an+1,S2n-1)在函數(shù)f(x)的圖象上;數(shù)列{bn}滿足b1=2,bn≠1,且(bn-bn+1)·g(bn)=f(bn)(n∈N+).
(1)求an并證明數(shù)列{bn-1}是等比數(shù)列;
(2)若數(shù)列{cn}滿足cn=,證明:c1+c2+c3+…+cn<3.
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